Question

For a light ray passing through a prism angle of incidence is I1

and

angle of emergence is I2

. In case of minimum deviation of the ray.

A. I1
= I2
B. I1>I2

C. I1<I2
D. None​

Answer 1

Answer:

it's answer will be a because of 12

Answer 2

Correct answer regarding angles is - A. I1 = I2

When a ray of light enters through any medium, then the angle which it makes with respect to normal is angle of incidence.

When a ray of light exits through any medium, then the angle which it makes with respect to normal is angle of emergence.

Minimum deviation is the condition at which sum of the two rays is minimum.

It depends on angle of incidence, angle of prism and refractive index of prism.