Question

a ray of light is incident on the interface separating diamond and water given that refractive index of diamond and waterwith respect to air are 2.42 and 1.33 respectively. draw a ray diagram by showing refracted ray and mark angle of incidence and angle of refraction

Answer 1

Answer:

When light is incident from water to diamond:

In this case the light is travelling from rare medium to denser medium, and hence, it will bend towards the normal.

(B) When light is incident from diamond to water:

In this case there are three cases.

(i) When angle of incidence is lesser than critical angle:

The light gets refracted away from the normal.

(ii) When angle of incidence is equal to critical angle:

The light gets refracted at 90°

(iii) When angle of incidence is greater than critical angle:

The light is reflected back in the same medium (diamond).

Explanation: