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Physics multiple choice questions (MCQ) on object 20 cm tall is located 14 cm from a concave mirror having focal length 20 cm. height of object is with options 32.5 cm, 35.6 cm, 50.8 cm and 66.7 cm, spherical mirrors quiz for competitive exam prep, viva interview questions with answers key. Free physics study guide to learn spherical mirrors quiz to attempt multiple choice questions based test.

MCQ. An object 20 cm tall is located 14 cm from a concave mirror having focal length 20 cm. The height of the object is

1. 35.6 cm
2. 32.5 cm
3. 50.8 cm
4. 66.7 cm

D

MCQ. The angle of incidence 45° is greater than critical angle of the glass which is

1. 42°
2. 40°
3. 30°
4. 35°

A

MCQ. Lenses form images through

1. reflection
2. refraction
3. defraction
4. acoustics

B

MCQ. A smooth surface of silver reflects rays of light in

1. many directions
2. one direction
3. two directions
4. no direction

B

MCQ. If the power of a convex lens is 5D then at what distance the object should be placed from the lens so that its real and 2 times larger image is formed?

1. 30 cm
2. 20 cm
3. 15 cm
4. 25 cm

A