Physics

1You look at yourself in a plane mirror. Your image is

2Total internal reflection can happen only when light travels

3Which mirror is used in torches and car headlamps to give a parallel beam?

4Light enters glass (n = 1.5) at an angle of incidence of 30°. The angle of refraction is about

5Two plane mirrors inclined at 60° form how many images of an object between them?

6A plane mirror is rotated by 15°. The reflected ray turns through

7A concave mirror is used as a

8Light travelling from air into glass bends

9Light passes from air into glass with an angle of incidence of 60° and an angle of refraction of 30°. What is the refractive index? (sin 60° = 0.866, sin 30° = 0.5)

10A swimming pool appears shallower than it is because of