NEET Physics Plane Mirror Spherical Mirror and Reflection of Light MCQs Set A

Question:  The light reflected by a plane mirror may form a real image

a) if the rays incident on the mirror are converging

b) under no circumstances

c) if the object is placed very close to the mirror

d) if the rays incident on the mirror are diverging

Answer: if the rays incident on the mirror are converging

Question: In image formation from spherical mirrors, only paraxial rays are considered because they

a) form nearly a point image of a point source

b) show minimum dispersion effect

c) contain most of the intensity of the incident light

d) are easy to handle geometrically

Answer: form nearly a point image of a point source

Question: For reflection through spherical surfaces, the normal at the point of incidence is

a) perpendicular to the tangent plane at the point of incidence and passes through the centre of curvature

b) perpendicular to the tangent plane at pole and passes through the focus.

c) perpendicular to the focal plane and passes through the pole

d) perpendicular to the principle axis and passes through bthe centre of curvature

Answer: perpendicular to the tangent plane at the point of incidence and passes through the centre of curvature

Question:  A convex mirror is used to form the image of an object. Then which of the following statements is/are true?
I. The image lies between the pole and the focus
II. The image is diminished in size
III. The image is real

a) I and II

b) II only

c) I only

d) I and III

Answer:  I and II

Question:

a) is plane

b) is convex

c) is concave

d) may be any spherical mirror

Answer: is plane

Question: A person is six feet tall. How tall must a plane mirror be if hem is able to see his entire length?

a) 3 ft

b) 4.5 ft

c) 7.5 ft

d) 6 ft

Answer:  3 ft

More Questions.....................................

Question:  An object is placed 40 cm from a concave mirror of focal length 20 cm. The image formed is

a) real, inverted and same in size

b) real, inverted and smaller

c) virtual, erect and larger

d) virtual, erect and smaller

Answer: real, inverted and same in size

Question: Which of the following is incorrect statement?

a) a real, inverted, same-sized image can be formed using a convex mirror

b) a virtual, erect, magnifield image can be formed using a concave mirror

c) a virtual, erect, same-sized image can be obtained using a plane mirror

d) the magnification produced by a convex mirror is always less than one

Answer: a real, inverted, same-sized image can be formed using a convex mirror

Question: A rod of length 10 cm lies along the principal axis of a concave mirror of focal length 10 cm in such a way that its end closer to the pole is 20 cm away from the mirror. The length of the image is

a) 5 cm

b) 2.5 cm

c) 15 cm

d) 10 cm

Answer: 5 cm

Question: Two plane mirrors are inclined to each other at a certain angle. A ray of light first incident on one of them at an inclination of 10° with the mirror retraces its path after five reflections. The angle between the mirrors is :

a) 20°

b) 30°

c) 22°

d) 12°

Answer: 20°

Question:   A car is fitted with a convex side-view mirror of focal length 20 cm. A second car 2.8 m behind the first car is overtaking the first car at a relative speed of 15 m/s. The speed of the image of the second car as seen in the mirror of the first one is :

a)

b)

c) 10 m/s

d) 15 m/s

Answer:

Question:  The width of man’s face is 10cm. The distance between the eyes of the man is 4cm. Then the minimum width of plane mirror to see his full face, is

a) 3 cm

b) 10 cm

c) 4 cm

d) 5 cm

Answer: 3 cm

Question: A ray of light is incident at 50° on the middle of one of the two mirrors arranged at an angle of 60° between them. The ray then touches the second mirror, get reflected back to the first mirror, making an angle of incidence of

a) 70°

b) 80°

c) 60°

d) 50°

Answer: 70°

Question:  A concave mirror is placed on a horizontal table, with its axis directed vertically upwards. Let O be the pole of the mirror and C its centre of curvature. A point object is placed at C. It has a real image, also located at C. If the mirror is now filled with water, the image will be.

a) real, and located at a point between C and O

b) real, and will remain at C.

c) virtual, and located at a point between C and O

d) None of these

Answer: real, and located at a point between C and O

Question: You are asked to design a shaving mirror assuming that a person keeps it 10 cm from his face and views the magnified image of the face at the closest comfortable distance of 25 cm. The radius of curvature of the mirror would then be :

a) – 60 cm

b) 24 cm

c) –24 cm

d) 60 cm

Answer: – 60 cm