CBSE Class 7 Science Light MCQs

Light

Question. Light travels in 
(a) Curved lines
(b) In circular path 
(c) In straight line
(d) Zig-zag path

Answer:  C

Question. change in the path of light after striking a mirror is called
(a) reflection of light
(b) Rectilinear propagation of light
(c) Lateral inversion
(d) Dispersion

Answer:  A

Question. Splitting of white light into seven colours is called
(a) reflection of light
(b) Rectilinear propagation of light
(c) Lateral inversion 
(d) Dispersion

Answer:  D

Question. When white light is passed into a prism it splits into 
(a) Seven colours  
(b) Eight colours 
(c) Five colours 
(d) Three colours

Answer:  A

Question. Sunlight is 
(a) Red in colour
(b) Green in colour
(c) Yellow in colour
(d) White in colour

Answer:  D

Question. The light that is reflected from a compact disc (CD) consists of
(a) Seven colours
(b) Eight colours
(c) Five colours
(d) Three colours

Answer:  A

Question. Image formed by a convex mirror is a
(a) Virtual image 
(b) Erect 
(c) Diminished 
(d) All of the above

Answer:  D

Question. When an object is placed between the Focus and centre of curvature of concave mirror, then
(a) Real 
(b) Inverted 
(c) Enlarged 
(d) All of the above

Answer:  D

Question. The image which can be caught on a screen is called
(a) Real image  
(b) Virtual image 
(c) Shadow
(d) Impression

Answer:  A

Question. A virtual image larger than the object can be produced by a 
(a) Plane Mirror 
(b) Concave mirror 
(c) Convex mirror 
(d) All of the above

Answer:  B

Question. Latha is observing her image in a plane mirror. The distance between the mirror and her image is 6m. If she moves 2m towards the mirror, then the distance between Latha and her image will be 
(a) 8m  
(b) 4m
(c) 10m
(d) 5m

Answer:  A

Question. Type of mirror that is used as a rear-view mirror in case of vehicles is 
(a) Concave mirror
(b) Convex mirror
(c) Plane mirror
(d) None of the 

Answer:  B

Question. The object in which seven colours spread over it appears to be white in colour when rotated is Called
(a) Galileo’s disc
(b) Newton’s disc
(c) Rutherford’s disc
(d) Faraday’s disc

Answer:  B

Question. Rectilinear propagation is
(a) mode of travelling in curved lines
(b) mode of travelling in straight lines
(c) ability to bend around obstacles
(d) displaying the phenomenon of diffraction 

Answer:  B 

Question. A virtual image
(a) can be formed on the screen
(b) cannot be formed on the screen
(c) is formed only by the plane mirror
(d) is formed only by the convex mirror 

Answer:  B 

Question. Image of objects spread over a large area form in:
(a) concave mirror
(b) virtual mirror
(c) spherical mirror
(d) convex miri’or 

Answer:  A 

Question. The sunlight is said to be white light, a prism splits sunlight into:
(a) seven colours
(b) seventeen colours
(c) seven hundred colours
(d) seventy colours

Answer:  A

Question. Which of the foilowing mirror is a car mirror made up of convex mirror that reflects the view out of the rear window?
(a) concave mirror
(b) rear-view mirror
(c) convex mirror
(d) none of these 

Answer:  A 

Question. Which of the following is used as a side view mirror?
(a) Plane mirror
(b) Concave mirror
(c) Convex mirror
(d) Convex lens 

Answer:  C 

Question. A convex lens is
(a) thick at centre
(b) thin at the centre
(c) thick at edges
(d) hollow at the centre 

Answer:  A 

Question. You are provided with a convex mirror, a concave mirror, a convex lens and a concave lens. You can get an inverted image from
(a) both concave lens and convex lens
(b) both concave mirror and convex mirror
(c) both convex mirror and convex lens
(d) both convex mirror and concave lens 

Answer:  C 

Question. The image formed by a concave lens is always virtual, erect and:
(a) bigger in size
(b) smaller in size
(c) medium in size
(d) all of these 

Answer:  A 

Question. Light is
(a) an electromagnetic radiation
(b) a transverse wave
(c) mass less
(d) All of the above 

Answer:  D 

Question. An image being in such a position that top and bottom are reversed is:
(a) erect
(b) virtual
(c) concave
(d) inverted 

Answer:  A 

Question. The image formed by a concave mirror can be smaller or larger in size than the object, the image may also be real or:
(a) erect
(b) virtual
(c) convex
(d) concave 

Answer:  A 

Question. In order to be used as mirrors, glasses are coated with
(a) silver
(b) copper
(c) aluminium
(d) platinum

Answer:  A 

Question. Looking through a lens at the sun or a bright light is:
(a) easy
(b) dangerous
(c) difficult
(d) good

Answer:  A 

Question. Band of seven colour of light appeared on screen when white light passes through is prism is called
(a) Spectrum
(b) Refractive index
(c) Angle of deviation
(d) Colour band 

Answer:  A

Question. A diverging mirror is
(a) a plane mirror
(b) a convex mirror
(c) a concave mirror
(d) a shaving mirror 

Answer:  B 

Question. Which one shows lateral inversion?
(a) Plane mirror
(b) Convex mirror
(c) Concave mirror
(d) All of these 

Answer:  A 

Question. When light bounces off a surface, the surface is
(a) Transparent
(b) Reflector
(c) Opaque
(d) Translucent 

Answer:  B 

Question. Concave lens is also known as
(a) Converging lens
(b) Diverging lens
(c) Bifocal length
(d) Biconcave lens 

Answer:  B 

Question. If reflecting surface is convex, then it is a:
(a) concave mirror
(b) erect
(c) virtual
(d) convex mirror

Answer:  A

Question. If an object is placed at a distance of 0.5 m in front of a plane mirror, the distance between the object and the image formed by the mirror will be
(a) 2 m
(b) 1 m
(c) 0.5 m
(d) 0.25 m

Answer:  B

Question. A convex lens can form:
(a) horizontal and vertical image
(b) real and inverted image
(c) real and virtual image
(d) virtual and erect image 

Answer:  A 

Question. Which colour of light scattered least
(a) Green
(b) Yellow
(c) Red
(d) Blue

Answer:  C

Question. A plane mirror produces a
(a) virtual and erect image
(b) virtual and inverted image
(c) real and erect image
(d) real and inverted image 

Answer:  A