Question

Observe the given figure and answer the following questions:

1. Name the process represented by the figure.
2. State the two laws related to the process.

Answer 1

1. Refraction of light
2. Laws of refraction:
   1. Incident ray and refracted ray at the point of incidence N are on the opposite sides of the normal to the surface of the slab at that point i.e. CD, and the three, incident ray, refracted ray and the normal, are in the same plane.
   2. For a given pair of media, here air and glass, the ratio of sin i to sin r is a constant. Here, i is the angle of incidence and r is the angle of refraction.