CBSE Class 10 Physics Light Reflection and Refraction MCQs

Refer to CBSE Class 10 Physics Light Reflection and Refraction MCQs provided below available for download in Pdf. The MCQ Questions for Class 10 Science with answers are aligned as per the latest syllabus and exam pattern suggested by CBSE, NCERT and KVS. Multiple Choice Questions for Chapter 10 Light Reflection and Refraction are an important part of exams for Class 10 Science and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for CBSE Class 10 Science and also download more latest study material for all subjects

MCQ for Class 10 Science Chapter 10 Light Reflection and Refraction

Class 10 Science students should refer to the following multiple-choice questions with answers for Chapter 10 Light Reflection and Refraction in Class 10.

Chapter 10 Light Reflection and Refraction MCQ Questions Class 10 Science with Answers

Question : Coin placed in a bowl when seen from a place just disappears. When water is poured into the bowl without disturbing the coin , the coin
(a) Will not be seen
(c) Becomes visible again
(b) Appears above the water surface
(d) Appears very much deep inside the water

Answer :  C
 
Question : Nature of the image formed by a convex mirror is
(a) Real, inverted, diminished
(c) Real , inverted , enlarged
(b) Virtual, erect, diminished
(d) Virtual, erect, enlarged
Answer :  B
 
Question : The property of a mirror used in burning a paper is
(a) Rays from an object placed at a large distance in a concave mirror after reflection forms the image at the Focus
(b) Rays from an object placed at a large distance in a convex mirror after reflection forms the image at the Focus
(c) Rays from an object placed at Focus after reflection in a concave mirror forms the image at a very large distance.
(d) Rays from an object placed between F and 2F in a concave mirror after reflection forms the image beyond the Focus
Answer :  A
 
Question : The focal length of a concave mirror is 10cm. The position of the object that is useful for getting an enlarged image which can be caught on a screen is
(a) Placed at a distance of 5 cm. from the pole of the mirror
(b) Placed at a distance of 15 cm from the pole of the mirror
(c) Placed at a distance of 35 cm from the pole of the mirror
(d) Placed at a distance of 5 cmfrom the pole of the mirror
Answer : C
 
Question : The power of a lens is -3.5D. The lens is
(a) Convex
(c) concave
(b) Plano-convex
(d) Plano-concave
Answer : C
 
Question : Formula to find the refractive index of a medium is
(a) n=speed of light in the medium /speed of light in air
(b) n=1 /speed of light in air
(c) n=speed of light in the air/speed of light in the medium
(d) n=1 /speed of light in the medium
Answer :  C
 
Question : In case of refraction through a glass slab
(a) Incident ray is parallel to the refracted ray
(c) Angle of incidence is equal to the angle of refraction
(b) Incident ray is parallel to the emergent ray
(d) Angle of refraction is equal to the angle of emergence
Answer : B
 
Question : Mirror that can be chosen to view a tall building in a small mirror is
(a) Plane mirror (c) Convex mirror
(b) Concave mirror (d) Plano-Convex mirror
Answer :  C
 
Question : Mirror formula is
(a) 1/v-1/u =1/f
(c) 1/v+1/u =1/f
(b) M=v/u
(d) M=h/h’
Answer :  C
 
Question : The mirror used by ENT specialists is
(a) Plane mirror 
(b) Concave mirror
(c) Convex mirror
(d) Plano-convex mirror
Answer :  B
 
Question : A student obtained a blurred image of an illuminated distant tower on a screen by using a convex lens In order to obtain sharp image of the tower on the screen ,he must shift the lens
(a) towards the screen 
(b) away from the screen
(c) away from the lens
(d) either towards away or near the screen
Answer :  B
 
Question : An object AB is placed in front of a convex Lens at its principal focus The image will be formed at
(a) focus
(b) beyond C 
(c) Between F & C
(d) infinity
Answer :  D
 
Question : When an object moves closer to a concave lens, the Image formed by it shifts
(a) Away from the lens
(b) Towards the lens 
(c) First away and then towards the lens 
(d) First towards and then away from the lens
Answer :  A
 
Question : When a ray of light passes from a denser medium to a rarer medium which angle is greater
(a) angle of incidence 
(b) angle of refraction 
(c) both
(d) none
Answer :  B
 
Question : If optical density of a medium is high then the speed of light in that medium is :
(a) high 
(b) low 
(c) unchanged 
(d) none of these
Answer :  B
 
Question : In convex lens, if the object is at infinity then position of image is at :
(a) Infinity 
(b) Between F and 2F 
(c) At the Focus 
(d) None of these
Answer :  C
 
Question : A light is said to be convergent when :
(a) All the rays spread around from a point source of light
(b) It travels in an irregular pattern
(c) All the rays travel parallel to each other
(d) all the rays converge together to a single point
Answer :  D
 
Question :When the ray of light falls obliquely on the interface of two media and goes to the another medium. It is called:
(a) Reflection of light 
(b) Refraction of light 
(c) Dispersion of light 
(d) Both (a) and (b) 
 Answer :  B
 
Question :Convex lens is used in case of :
(a) myopia 
(b) hypermetropia 
(c) presbyopia 
(d) astigmatism
Answer :  B
 
Question : Short sightedness is also called as :
(a) myopia 
(b) hypermetropia 
(c) presbyopia 
(d) astigmatism
Answer :  A
 
Question : Cylindrical lens is used in case of :
(a) myopia 
(b) hypermetropia 
(c) presbyopia 
(d) astigmatism
Answer :  D
 
Question : Even in absolutely clear water, a diver cannot see very clearly :
(a) Because rays of light get diffused
(b) Because velocity of light is reduced in water
(c) Because a ray of light passing through the water makes it turbid
(d) Because the focal length of the eye lens in water gets changed and the image is no longer focused sharply on the retina
Answer :  D
 
Question : The persistence of vision of the eye is :
(a) 1 /16 second
(b) 1/5 second 
(c) 1/26 second 
(d) 1/100 second
Answer :  A
 
Question : In eye, the focusing is done by :
(a) to and fro movement of the eye lens 
(b) to and fro movement of retina
(c) change in the convexity of the lens 
(d) change in refractive index of the eye fluid
Answer :  C
 
Question : While looking at nearby objects, the muscle __________ so as to ___________ the focal length of eye lens.
(a) Contracts, increase 
(b) Relax, increase 
(c) Contracts, decrease 
(d) Relax, decrease
Answer :  C
 
Question : Which of the following factors is responsible for the refraction :
(a) Optical density 
(b) Frequency of light
(c) Angle of incidence
(d) Mass density
Answer :  A
 
Question : Refractive index of a medium does not depends on :
(a) Nature of the medium 
(b) Wavelength of the light used
(c) Temperature 
(d) Angle of incidence
Answer :  C
 
Question : A far sighted person cannot focus distinctly objects closer than 120 cm. The lens that will permit him to read from a distance of 40 cm will have a focal length :
(a) + 30 cm 
(b) – 30 cm 
(c) + 60 cm 
(d) – 60 cm
Answer :  C
 
Question : The image is always erect in :
(a) Plane mirror 
(b) Concave mirror
(c) Convex mirror 
(d) Both (a) and (c) are correct 
Answer :  D
 
Question : Light waves are similar in nature to :
(a) Gamma rays 
(b) x-rays 
(c) Cathode rays 
(d) Both (a) & (b) 
Answer :  D
 
Question : An object of size 2.0 cm is placed perpendicular to the principal axis of a concave mirror. The distance of the object from the mirror equals the radius of curvature. The size of the image will be :
(a) 0.5 cm 
(b) 1.0 cm 
(c) 1.5 cm 
(d) 2.0 cm
Answer :  D
 
Question : An object is placed 20 cm from a convex mirror. Its image is formed 12 cm from the mirror. Find the focal length of the mirror :
(a) 25 cm 
(b) 30 cm 
(c) 15 cm 
(d) 60 cm
Answer :  B
 
Question : A dentist uses a small mirror that gives a magnification of 4 when it is held 0.60 cm from a tooth. The radius of curvature of the mirror is :
(a) 1.60 cm (convex) 
(b) 0.8 cm (concave)
(c) 1.60 cm (concave) 
(d) 0.8 cm (convex)
Answer :  B
 
 
Question : A 2.0 cm high object is placed perpendicular to the principal axis of a concave mirror. The distance of the object from the mirror is 30 cm and its image is formed 60 cm from the mirror, on the same side of the mirror as the object. Find the height of the image formed :
(a) 4 cm 
(b) 2 cm 
(c) 3 cm
(d) 5 cm
Answer :  A
 
 
Question : When light travels from one medium to the other of which the refractive index is different, then the quantities which will change :
(a) Frequency, wavelength and velocity 
(b) Frequency and wavelength
(c) Frequency and velocity 
(d) Wavelength and velocity
Answer :  D
 
Question : Ray nature is confirmed by the phenomenon of :
(a) reflection 
(b) refraction 
(c) both A and B 
(d) none of these
 Answer :  C
 
Question : Electromagnetic wave theory was proposed by :
(a) Maxwell 
(b) Hertz 
(c) Huygens 
(d) Newton
Answer :  A
 
Question : Direction of path of light changes at the interface of the two medi(a) This phenomenon is known as :
(a) reflection 
(b) absorption 
(c) refraction 
(d) all of these 
Answer :  C
 
Question : A ray of light passing through optical centre suffers :
(a) reflection 
(b) refraction
(c) total internal reflection 
(d) none of these
Answer :  B
 
Question : A lens is thin in the middle and thick at the edges. The lens is :
(a) concave 
(b) convex 
(c) plane 
(d) prism
Answer :  A
 
Question : A lens converges light rays. The lens is :
(a) plane 
(b) prism 
(c) concave 
(d) convex
Answer :  D
 
Question : Aperture is the diameter of :
(a) Entire lens
(b) Only that part of lens through which refraction is taking place
(c) Case of lens
(d) None of these
Answer :  B
 
Question : Which of the following terms is not related to spherical mirrors :
(a) Principal axis 
(b) Optical centre 
(c) Aperture 
(d) None of these
Answer :  B
 
Question : The sign of power of convex lens is :
(a) positive 
(b) negative 
(c) zero 
(d) infinite
Answer :  A
 
Question : If the magnification of a lens has negative value, the image is :
(a) virtual and erect 
(b) real and inverted 
(c) A or B any 
(d) neither A nor B
Answer :  B
 
Question : The ___________ colour is at the top and _________ colour is at the bottom of the spectrum.
(a) red, violet 
(b) red, blue 
(c) violet, red 
(d) none of these
Answer :  A
 
Question : A lens of power 6 D is put in contact with a lens of power –4 D. The combination will behave like a :
(a) divergent lens of focal length 25 cm 
(b) convergent lens of focal length 50 cm
(c) divergent lens of focal length 20 cm 
(d) convergent lens of focal length 100 cm
Answer :  B
 
Question : If an object of size 5 cm is placed 20 cm from a lens and its image of same size is formed 20 cm from lens on other side, lens is :
(a) convex 
(b) concave 
(c) glass slab 
(d) prism
Answer :  A
 
Question : The height through which an object appears to be raised in a denser medium is called :
(a) normal shift 
(b) lateral shift 
(c) red shift 
(d) blue shift
Answer :  B
 
Question : R.I. of air is :
(a) 2 
(b) 1 
(c) 1.13 
(d) 1.5
Answer :  A
 
Question : The perpendicular distance between the incident and emergent rays, when light is incident obliquely on a refracting slab with parallel faces is called :
(a) normal shift 
(b) lateral shift 
(c) red shift 
(d) blue shift
Answer :  B
 
Question : According to the principle of reversibility of light.
(a) 1μ2 =2μ1 
(b) 1μ2 = 1/2μ1
(c) both A & B 
(d) none of these
Answer :  B
 
Question : Scattering is also a type of :
(a) Regular reflection 
(b) Refraction 
(c) Diffused reflection 
(d) Interference
Answer :  C
 
Question : Choose wrong statement :
(a) Light is invisible energy 
(b) light causes in us sensation of sight
(c) Light may be obtained from heat energy 
(d) We can see light
Answer :  D
 
Question : Transparent medium is one :
(a) Which partially allows light to pass through
(b) Which absorbs most of the light
(c) Which allows most of the light to pass through
(d) None of these
Answer :  C
 
Question : Speed of light is maximum in :
(a) Air 
(b) Water 
(c) Glass 
(d) Vacuum
Answer :  D
 
Question : Which of the following is not a natural source of light :
(a) Sun 
(b) Oil-lamps 
(c) Moon 
(d) Stars
Answer :  C
 
Question : Light is :
(a) Transverse wave 
(b) Longitudinal wave
(c) Mechanical wave 
(d) Both (b) and (c) are correct
Answer :  A
 
Question : Example of transparent medium is :
(a) Air 
(b) Distill water 
(c) Glass 
(d) All are correct
Answer :  D
 
Question : Straight line path along which light travels in a given direction is :
(a) Ray 
(b) Line segment 
(c) Beam 
(d) None of these
Answer :  A
 
Question : Thick layer of water is :
(a) Transparent 
(b) Translucent 
(c) Opaque 
(d) None of these
Answer :  B
 
Question :In a plane mirror, which layer acts as the reflecting layer :
(a) Glass sheet 
(b) Silver layer
(c) Orange red paint layer 
(d) Both (a) and (b) are correct
Answer :  B
 
Question : Normal always lies between the incident ray and the reflected ray when the ray is incident obliquely on a surface. State true or false :
(a) True 
(b) False
(c) Cannot be determined 
(d) None of these
Answer :  A
 
Question : A thin plane mirror :
(a) Reflects light 
(b) Refracts light 
(c) Transmits light 
(d) None of these
Answer :  A
 
Question : A real image is formed when two or more :
(a) Reflected rays meet 
(b) Refracted rays meet
(c) Reflected rays appear to meet 
(d) Both A and B are correct
Answer :  D
 
Question : State true or false :-
(i) Laws of reflection are valid only for plane surfaces
(ii) A ray of light retraces its path after reflection in case of normal incidence
(iii) Glance angle of incidence is always equal to angle of reflection.
(a) TTT 
(b) FTF 
(c) FTT 
(d) FFT
Answer :  C
 
Question : We can see the things around us due to :
(a) Regular reflection 
(b) Irregular reflection 
(c) Specular reflection 
(d) Mixed reflection
Answer :  B
 
Question : The focal length of a spherical mirror whose radius of curvature is 20 cm is :
(a) 40 cm 
(b) 30 cm 
(c) 20 cm 
(d) 10 cm
Answer :  D
 
Question : The focal length of a plane mirror is :
(a) zero 
(b) 10 cm 
(c) 20 m 
(d) ∞
Answer :  D
 
Question : Inner side of a spoon is an example of :
(a) Concave lens 
(b) Concave mirror 
(c) Convex mirror 
(d) Convex lens
Answer :  B
 
Question : A ray of light is incident on a plane mirror at an angle of incidence i. Then the ray after reflection is deviated by an angle q equal to :
(a) i 
(b) π – i 
(c) 2i 
(d) π – 2i
Answer :  D
 
Question : Plane mirror is used in :
(a) Galvanometer Scale 
(b) Microscope 
(c) Telescope 
(d) None of these
Answer :  A
 
Question :A ray of light coming along radius of curvature after reflection from concave mirror :
(a) passes through focus 
(b) passes through centre of curvature
(c) passes through F/2 
(d) can go in any direction
Answer :  B
 
Question : When image and object are on the same side of a concave mirror then nature of image will be :
(a) real 
(b) virtual
(c) may be real may be virtual 
(d) nothing can be said
Answer :  A
 
Question : Which mirror cannot form a magnified image?
(a) Convex mirror 
(b) Plane mirror
(c) Both convex and concave mirrors 
(d) Both (a) and (b) are correct
Answer :  D
 
Question : The angle of incidence of a ray passing through centre of curvature of a spherical mirror is :
(a) 0° 
(b) 90° 
(c) 45° 
(d) 180°
Answer :  A
 
Question : The mirror used by a dental surgeon is :
(a) Plane 
(b) Convex 
(c) Concave 
(d) Any one of the above
Answer :  C
 
Question : When an object is moved from C to F of a concave mirror then its image will move from :
(a) C to F 
(b) C to infinity 
(c) F to C 
(d) C to 2C
Answer :  B
 
Question : As per New Cartesian Sign Convention :
(a) Focal length of concave mirror is positive and that of convex mirror is negative
(b) Focal length of both, convex and concave mirror is positive
(c) Focal length of both, convex and concave mirror is negative
(d) Focal length of concave mirror is negative and that of convex mirror is positive
Answer :  D
 
 
Question : Lateral shift varies inversely to :
(a) wavelength 
(b) refractive index 
(c) incident angle 
(d) none of these
Answer :  A
 
Question : The velocity of light in air and glass is 3 ×108 m/s and 2 ×108 m/s respectively. What is the R.I. of glass w.r.t. air:
(a) 1.3 
(b) 1.4 
(c) 1.5 
(d) 6
Answer :  C
 
Question : A virtual image is smaller than the object can be formed by :
(a) convex lens 
(b) concave lens 
(c) concave mirror 
(d) plane mirror
Answer :  B
 
Question : We put glass piece on a printed page, image of prints on the page has same size when viewed from glass piece. The piece is :
(a) convex lens 
(b) glass slab 
(c) concave lens 
(d) prism
Answer :  B
 
Question : In above question if the print image is enlarged then the piece is a :
(a) glass slab 
(b) convex lens 
(c) concave lens 
(d) prism
Answer :  B

Question. Four students A, B, C and D carried out the experiment of finding out focal length

CBSE Class 10 Physics Light Reflection and Refraction MCQs

 Answer: A

Question. When a ray of light passes from a denser medium to a rarer medium which angle is greater
a) angle of incidence 
b) angle of refraction
c) both
d) none

Answer: B

Question : If parallel rays are incident on a convex lens, after refraction these rays will meet at :
(a) focus 
(b) centre of curvature 
(c) focal plane 
(d) none of these
 Answer :  C
 
CBSE Class 10 Physics Light Reflection and Refraction MCQs
Question : If image formed by a lens is always diminished and between F and O then the lens is :
(a) concave 
(b) convex 
(c) both A and B 
(d) none of these
Answer :  A
 
CBSE Class 10 Physics Light Reflection and Refraction MCQs
Answer : D
 


Question : Image formed by plane mirror is
(a) real and erect
(b) real an inverted
(c) virtual and erect
(d) virtual and inverted

Answer :  C


Question : Power of a lens is –40, its focal length is
(a) 4 m
(b) – 40 cm
(c) – 0.25 m
(d) – 25 m.

Answer : C

Question : The mirror that always gives virtual and erect image of the object but image of smaller size than the size of the object is
(a) Plane mirror
(b) Concave mirror
(c) Convex mirror
(d) none of these

Answer :  C

Question : The radius of curvature and focal length of a concave mirror are
(a) positive
(b) negative
(c) both
(d) none of these

Answer :  B

Question : The ratio of the speed of light in vacuum to that in a medium is known as
(a) magnification
(b) refraction
(c) refractive index
(d) Snell’s law

Answer :  C

Question : The optical phenomena, twinkling of stars, is due to
(a) atmospheric reflection
(b) total reflection
(c) atmospheric refraction
(d) total refraction

Answer :  C

Question : The unit of power of lens is
(a) metre
(b) centimeter
(c) diopter
(d) m–1

Answer :  C

Question : The refractive indices of some media are given below:
CBSE Class 10 Physics Light Reflection and Refraction MCQs


In which of these is the speed of light minimum and maximum, respectively.
(a) X-minimum, W-maximum
(b) Z-minimum, W-maximum
(c) W-minimum, X-maximum
(d) X-minimum, Z-maximum

Answer :  C

Question : An incident ray makes 60° angle with the surface of the plane mirror, the angle of its refraction is
(a) 60°
(b) 90°
(c) 30°
(d) 0°

Answer :  C

Question : A mirror that has very wide field view is
(a) concave
(b) convex
(c) plane
(d) none of these

Answer :  B

 

Question : Consider The Following Statements And Choose The Correct One:
(a) The phenomenon of lateral inversion is due to the reflection of light.
(b) In the plane mirror, the right side of our body becomes left side in the image, whereas the left side of our body becomes right side in the image.
(c) The nature of image formed by a plane mirror is virtual and erect and the size of image formed by a plane mirror is equal to that of the object.
(d) All the above.

Answer :  D

Question : Sin C =
(a) n/1
(b) 1/n
(c) n2
(d) n/2

Answer :  B

Question : When a ray of light is incident normally, the angle of incidence is
(a) 900
(b) 0
(c) 450
(d) none

Answer :  B

Question : A 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. The focal length of this mirror is
(a) – 30 cm
(b) – 20 cm
(c) – 40 cm
(d) – 60 cm

Answer :  B

Question : What is the relation between focal length (f) and radius of curvature (r) of a curve mirror?
(a) f = 2r
(b) f = r/2
(c) f = r/3
(d) f = 3r/2

Answer :  A

Question : A stick in water appears broken due to
(a) reflection of light
(b) refraction of light
(c) total internal reflection
(d) none of these

Answer :  B

Question : If angle of incidence is 00 then angle of reflection is
(a) 900
(b) 00
(c)450
(d)600

Answer :  B

Question : Magnification produced by a rear view mirror fitted in vehicles
(a) is less than one
(b) is more than one
(c) is equal to one
(d) can be more than or less than one depending upon the position of the object in front of it.

Answer :  A

Question : In which of the following, the image of an object placed at infinity will be highly diminished and point sized?
(a) Concave mirror only
(b) Convex mirror only
(c) Convex lens only
(d) Concave mirror, convex mirror, concave lens and convex lens

Answer :  D

Question : A point source of light is placed at the centre of curvature of a concave mirror. The angle of deviation of the rays incident on the mirror from this source and reflected from it is
(a) 0
(b) 180 degrees
(c) 90 degrees
(d) 360 degrees

Answer :  B

Question : Rays From Sun Converge At A Point 15 Cm In Front Of A Concave Mirror. Where Should An Object Be Placed So That Size Of Its Image Is Equal To The Size Of The Object?
(a) 15 cm in front of the mirror
(b) 30 cm in front of the mirror
(c) Between 15 cm and 30 cm in front of the mirror
(d) More than 30 cm in front of the mirror

Answer :  B

Question : The refractive index of water is 1.33. The speed of light in water will be
(a) 1.33 × 108 m/s
(b) 3 × 108 m/s
(c) 2.26 × 108 m/s
(d) 2.66 × 108 m/s

Answer :  C

Question : A full length image of a distant tall building can definitely be seen by using
(a) a concave mirror
(b) a convex mirror
(c) a plane mirror
(d) both concave as well as plane mirror

Answer :  B

Question : In A Quiz Competition, You Are Asked A Question Where You Have To Choose The Statement Which Is/ Are Incorrect?
(a) The bending of light when it goes from one medium to another obliquely is called refraction of light.
(b) The refraction of light take place at the boundary between the two media.
(c) The speed of light in air is 3 x 10 to power 18 m/s whereas that in glass is 2 x 10 to power 8 m/s.
(d) Greater the difference in the speed of light in the two media, greater will be the amount of refraction or bending of light.

Answer :  C

Question. Two plane mirrors are inclined at an angle θ. A ray of light is incident on one mirror and is then reflected from the other mirror. Then the angle between the first ray and the final ray will be     
(a) θ
(b) 2θ
(c) between θ and 2θ
(d) > 2θ

Answer : B

Question. A glass slab is placed in the path of a beam of convergent light, then the point of convergence of light   
(a) moves towards the glass slab
(b) moves away from the glass slab
(c) remains at the same point
(d) undergoes a lateral shift

Answer : B

Question. A real image is formed by a convex mirror when the object is placed at   
(a) infinite
(b) between center of curvature and focus
(c) between focus and pole
(d) None of the above

Answer : D

Question. A virtual image is formed by a concave mirror when the object is placed between    
(a) infinity and center of curvature
(b) center of curvature and focus
(c) focus and the pole
(d) All of the above

Answer : C

Question. Find out the correct option from the following.    
(A) The magnification is positive for all virtual images and is negative for all real images.
(B) The magnification of concave lens and convex mirror is always positive where as the magnification of convex lens and concave mirror can be positive or negative depending on the position of the object before the lens.
(a) Only A is true
(b) Only B is true.
(c) Both A and B are true
(d) Both A and B are false

Answer : C

Question. In an experiment to determine the focal length of a concave lens, a student obtained the image of a distant window on the screen. To determine the focal length of the lens, she/he should measure the distance between the    
(a) lens and the screen only
(b) lens and the window only
(c) screen and the window only
(d) screen and the lens and also between the screen and the window

Answer : A

Question. A concave mirror for face viewing has focal length of 0.4 m. The distance at which you hold the mirror from your face in order to see your image upright with a magnification of 5 is:  
(a) 0.24 m
(b) 1.60 m
(c) 0.32 m
(d) 0.16 m

Answer : C

Question. On the basis of experiment ‘to trace the path of a ray of light passing through a rectangular glass slab’ four students arrived at the following interpretations :  
I. Angle of incidence is greater than the angle of emergence.
II. Angle of emergence is less than the angle of refraction.
III. Emergent ray is parallel to the incident ray.
IV. Emergent ray is parallel to the refracted ray.
The correct interpretation is that of the student.
(a) I
(b) II
(c) III
(d) IV

Answer : C

Question. The focal length of a plane mirror is   
(a) positive
(b) negative
(c) zero
(d) infinity

Answer : D

Question. Which of the following statements is true?    
(a) A convex lens has 4 dioptre power having a focal length 0.25 m
(b) A convex lens has –4 dioptre power having a focal length 0.25 m
(c) A concave lens has 4 dipotre power having a focal length 0.25 m
(d) A concave lens has – 4 dioptre power having a focal length 0.25 m

Answer : A

Question. A convex mirror is used   
(a) by a dentist
(b) for shaving
(c) as a rear view mirror in vehicles
(d) as a light reflector for obtaining a parallel beam of light.

Answer : C

Question. In case of a concave mirror, when the object is situated at the principal focus, the image formed is    
(a) real and inverted
(b) of infinite size
(c) lies at infinity
(d) All of these

Answer : D

Question. Virtual images of object of the same size are formed by  
(a) a concave mirror
(b) a convex mirror
(c) a plane mirror
(d) all the above

Answer : C

Question. A person standing at some distance from a mirror finds his image erect, virtual and of the same size. Then the mirror is possibly     
(a) plane mirror
(b) concave mirror
(c) plane or concave mirror
(d) plane or concave or convex mirror

Answer : A

Question. The concave mirrors are used in    
(a) reflecting telescopes
(b) magic- lanterns
(c) cinema projectors
(d) All of these

Answer : D

Question. Which of the following are used in a Kaleidoscope    
(a) plane mirrors
(b) concave
(c) convex mirrors
(d) All of the above

Answer : A

Question. When a convex lens made up of glass is immersed in water, its focal length    
(a) decreases
(b) does not change
(c) increases
(d) None of the above

Answer : C

Question. A 10 mm long awlpin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. The focal length of this mirror is  
(a) – 30 cm
(b) – 20 cm
(c) – 40 cm
(d) – 60 cm

Answer : B

Question. The linear magnification for a mirror is the ratio of the size of the image to the size of the object, and is denoted by m. Then, m is equal to (symbols have their usual meanings):  
(a) f/ f - u
(b) f - u/f
(c) f/ f + v
(d) f + v/f

Answer : A

Question. An inverted image can be seen in a convex mirror,    
(a) under no circumstances
(b) when the object is very far from the mirror
(c) when the object is at a distance equal to the radius of curvature of the mirror
(d) when the distance of the object from the mirror is equal to the focal length of the mirror

Answer : A

Question. When an objects is placed between two mirrors placed inclined to each at an angle 45° Number of images formed are     
(a) 3
(b) 5
(c) 7
(d) None of these

Answer : C

Question. Two plane inclined mirrors form 5 images by multiple reflection. The angle of inclination is  
(a) 90°
(b) 60°
(c) 45°
(d) 30°

Answer : B

Question. For an object at infinity, a concave mirror produces an image at its focus which is    
(a) enlarged
(b) virtual
(c) erect
(d) real and point sized

Answer : D

Question. Foam of soap always appears white as   
(a) it contains large hydrocarbon chains.
(b) it absorbs red portion of the visible light
(c) it reflects light of all wavelengths.
(d) it has one hydrophobic end, which is insoluble in water.

Answer : C

Question. A bright × (cross) mark is made on a sheet of white paper. Over the white paper a rectangular glass-slab of thickness 3 cm is placed. On looking through, the image of the mark appears above the mark. It is below the upper surface of the slab by (μglass = 1.5)  
(a) 2.5 cm
(b) 1.5 cm
(c) 2 cm
(d) 1.75 cm

Answer : C

Question. When viewed vertically a fish appears to be 4 meter below the surface of the lake. If the index of refraction of water is 1.33, then the true depth of the fish is  
(a) 5.32 metres
(b) 3.32 metres
(c) 4.32 metres
(d) 6.32 metres

Answer : A

Question. A diverging lens with magnitude of focal length 25 cm is placed at a distance of 15 cm from a converging lens of magnitude of focal length 20 cm. A beam of parallel light falls on the diverging lens. The final image formed is :   
(a) real and at a distance of 40 cm from the divergent lens
(b) real and at a distance of 6 cm from the convergent lens
(c) real and at a distance of 40 cm from convergent lens
(d) virtual and at a distance of 40 cm from convergent lens.

Answer : C

Question. The ratio of the sine of angle of incidence to the sine of angle of refraction is called   
(a) refractive index
(b) optical density
(c) relative density
(d) none of these

Answer : A

Question. A convex lens is put 10 cm from a light source and it makes a sharp image on a screen, kept 10 cm from the lens. Now a glass block (refractive index 1.5) of 1.5 cm thickness is placed in contact with the light source. To get the sharp image again, the screen is shifted by a distance d. Then d is:   
(a) 1.1 cm away from the lens
(b) 0
(c) 0.55 cm towards the lens
(d) 0.55 cm away from the lens

Answer : D

Question. In order to get a diminished virtual image, the object can be placed anywhere in front of a     
(a) concave mirror
(b) plane mirror
(c) convex mirror
(d) none of these

Answer : C

Question : If an incident ray passes through the focus, the reflected ray will
(a) pass through the pole
(b) be parallel to the principal axis
(c) retrace its path
(d) pass through the centre of curvature

Answer :  B

Question : In case of refraction, if the angle of incidence and the angle of refraction are 45 degrees and 30 degrees respectively, then the angle of deviation is
(a) 75 o
(b) 15o
(c) 7.5o
(d) 37.5o

Answer :  B

Question : Which of the following statements is true?
(a) A convex lens has 4 dioptre power having a focal length 0.25 m
(b) A convex lens has –4 dioptre power having a focal length 0.25 m
(c) A concave lens has 4 dioptre power having a focal length 0.25 m
(d) A concave lens has –4 dioptre power having a focal length 0.25 m

Answer :  A

Question : Under which of the following conditions a concave mirror can form an image larger than the actual object?
(a) When the object is kept at a distance equal to its radius of curvature
(b) When object is kept at a distance less than its focal length
(c) When object is placed between the focus and centre of curvature
(d) When object is kept at a distance greater than its radius of curvature

Answer :  C

Question : A concave mirror forms a real and enlarged image of an object if the object is placed at/between
(a) 2F
(b) F
(c) F and C
(d)F and P

Answer :  C

Question : Focal length of a plane mirror is
(a) zero
(b)infinity
(c) double of its aperture
(d)half of its aperture

Answer :  A

Question : Between red and violet, which color has more frequency? 
(a) Red has more frequency than violet
(b) Violet has more frequency than red
(c) Red and violet has the same frequency
(d) Can not say

Answer :  B

Question : An object at a distance of + 15 cm is slowly moved towards the pole of a convex mirror. The image will get
(a) shortened and real
(b) enlarged and real
(c) enlarge and virtual
(d) diminished and virtual

Answer :  D

Question : Pradeep Appeared In Class Test But He Confused To Know The Correct Statement. Would You Help Him To Know That?
(a) According to the first law of refraction of light, the incident ray, the refracted ray and the normal at the point of incidence, all lie in the same plane.
(b) According to Snell’s law of refraction of light, the ratio of sine of angle of incidence to the sine of angle of refraction is constant for a given pair of media.
(c) The refractive index of a medium gives an indication of the light bending ability of that medium.
(d) All the above.

Answer :  D

Question : In case of refraction, when the light passes from rarer to a denser medium, if the angle of incident is 65o and angle of refraction is 25o, then the deviation of angle would be-
(a) 65o
(b) 25o
(c) 40o
(d) 30o

Answer :  C

Question : In torches, search lights and headlights of vehicles the bulb is placed
(a) between the pole and the focus of the reflector
(b) very near to the focus of the reflector
(c) between the focus and centre of curvature of the reflector
(d) at the centre of curvature of the reflector

Answer :  B

Question : An object at a distance of 30 cm from a concave mirror gets its image at the same point. The focal length of the mirror is
(a) – 30 cm
(b) 30 cm
(c) – 15 cm
(d) +15 cm

Answer :  C

Question : To obtain parallel ray from a point light source we use
(a) both convex lens and concave mirror
(b) both convex lens and convex mirror
(c) both concave lens and concave mirror
(d) both concave lens and convex mirror

Answer :  A

Question : A Concave Mirror Produces Magnification Of +4. The Object Is Place(d)
(a) At the focus
(b) Between focus and centre of curvature
(c) Between focus and pole
(d) Beyond the centre of curvature

Answer :  C

Question : Magnification produced by a rear view mirror fitted in vehicles
(a) is less than one
(b) is more than one
(c) is equal to one
(d) can be more than or less than one depending upon the position of the object in front of it

Answer :  A

Question : The refractive index of a medium with respect to vacuum is
(a) Always greater than one
(b) Always less than one
(c) Equal to one
(d) none of the above

Answer :  B

Question : A child is standing in front of a magic mirror. She finds the image of her head bigger, the middle portion of her body of the same size and that of the legs smaller. The following is the order of combinations for the magic mirror from the top.
(a) Plane, convex and concave
(b) Convex, concave and plane
(c) Concave, plane and convex
(d) Convex, plane and concave

Answer :  C

Question : The distance between the object and image will be
(a) 0.25 m
(b) 1.0 m
(c) 0.5 m
(d) 0.125 m

Answer :  C

Question : Magnification produced by a plane mirror is
(a)-1
(b) zero
(c) +1
(d) infinity

Answer :  C

Question : Mirror used for focusing light is
(a) Concave
(b) Convex
(c) plane
(d) none

Answer :  A

Question : What will be the angle of refraction for a ray of light fall perpendicular to the interface of two mediums?
(a) 90o
(b) 0o
(c) 180o
(d) 45o

Answer :  B

Question : Focal length of a convex lens is 15 cm. For which distance an object is placed so that the lens acts as a magnifying glass?
(a) Between 15 cm and 30 cm
(b) Less than 15 cm
(c) Greater than 30 cm
(d) Exactly at 30 cm

Answer :  B

Question : A ray of light strikes the surface of mirror at an angle of 300 with the mirror. The angle of reflection is:
(a) 300
(b) 600
(c) 450
(d) none.

Answer :  B

Question : An object 20cm high is placed at a distance of 100 cm from a plane mirror .The size of the image will be.
(a) 20 cm
(b) 40cm
(c) 10cm
(d) 100cm

Answer :  A

Question : Velocity of light in vacuum is
(a) 3×108 cm/s
(b) 3×108 km/s
(c) 3×108m/s
(d) none of these

Answer :  C

Question : A concave mirror is a part of a sphere of radius 30cm.It’s focal length is
(a) at infinity
(b)10cm
(c)15cm
(d) 60cm

Answer :  C

Question : Focal length of plane mirror is

(a) at infinity
(b) zero
(c) negative
(d) none of these

Answer :  A

 

Question : A concave mirror gives, real, inverted and same size image if the object is placed
(a) at F
(b) at infinity
(c) at C
(d) beyond C

Answer :  C

 

Question : A concave mirror gives virtual, erect and enlarged image if the object is placed:
(a) at infinity
(b) between F and C
(c) between P and F
(d) at F.

Answer :  C

 

Question : All the distances in case of spherical mirror are measured in relation to
(a) object to image
(b) the pole of the mirror
(c) the focus of the mirror
(d) the image to the object.

Answer :  B

 

Question : The object distance in both concave as well as convex mirror is
(a) negative
(b) positive
(c) zero
(d) none of these

Answer :  A

 

Question : In optics an object which has higher refractive index is called
(a) optically rarer
(b) optically denser
(c) optical density
(d) refractive index

Answer :  B

 

Question : Convex lens focus a real, point sized image at focus, the object is placed
(a) at focus
(b) between F and 2f
(c) at infinity
(d) at 2f

Answer :  C

Question : The radius of curvature of a mirror is 20 cm the focal length is
(a) 20 cm
(b) 10 cm
(c) 40 cm
(d) 5 cm

Answer :  B


Question : The power of a lens is + 1.6 D. The nature of lens is
(a) Convex lens
(b) Concave lens
(c) both concave an convex
(d) none of these

Answer :  A

 

Question : If the object is placed at focus of a concave mirror, the image is formed at
(a) infinity
(b) focus
(c) centre of curvature
(d) between F and O.

Answer :  A

Chapter 01 Chemical Reactions and Equations
CBSE Class 10 Science Chemical Reactions and Equations MCQs
Chapter 02 Acids, Bases and Salts
CBSE Class 10 Science Acids Bases and Salts MCQs
Chapter 03 Metals and Nonmetals
CBSE Class 10 Science Metals and Non Metals MCQs
Chapter 04 Carbon and its Compounds
CBSE Class 10 Science Carbon and its Compounds MCQs
Chapter 05 Periodic Classification of Elements
CBSE Class 10 Chemistry Periodic Classification of Elements MCQs
Chapter 07 Control and Coordination
CBSE Class 10 Biology Control and Coordination MCQs
Chapter 08 How do Organisms Reproduce
CBSE Class 10 Biology How do Organisms Reproduce MCQs
Chapter 09 Heredity and Evolution
CBSE Class 10 Science Heredity and Evolution MCQs
Chapter 10 Light Reflection and Refraction
CBSE Class 10 Physics Light Reflection and Refraction MCQs
Chapter 11 The Human Eye and the Colourful World
CBSE Class 10 Science The Human Eye and the Colourful World MCQs
Chapter 13 Magnetic Effects of Electric Current
CBSE Class 10 Science Magnetic Effects of Electric Current MCQs
Chapter 16 Sustainable Management of Natural Resources
CBSE Class 10 Biology Management of Natural Resources MCQs

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