Question

1.When a ray of light passes (obliquely) from one transparent medium to another transparent medium, it appears to change its direction. Name the phenomenon.
2.What happens if the ray of light passes normally from air to water?
3. Write the relation between speed and refractive index.
4. Name the factor which is taken as an indicator to measure the optical density of the given medium.
5. Calculate the refractive index of a glass sheet with that of air.
6. State the rules of refraction and draw the diagrams.
7. "A pond appears shallower than it actually is". Justify the statement by drawing a neat ray diagram.
8. Kishore dropped his eraser in a tub half-filled with water. When he tried to take it, to his surprise, it is not in the place where he tried but slightly dislocated. Show the actual and apparent position of the eraser in the tub.

Answer 1

The phenomenon is called refraction.