Question

In the diagram given below ∠EOD is known as

(A) Angle of reflection
(B) Angle of emergence
(C) Angle of deviation
(D) Angle of prism

Answer 1

Hint Angle of reflection : - The angle between the reflected ray and the normal is known as the angle of reflection.
Angle of emergence: - The angle of emergence is the angle of the light coming out of a medium (for an example in case of a glass slab with its parallel sides).
Angle of deviation: - Angle between the incident ray and the emergent ray is called the angle of deviation.
Angle of prism: - The angle between the two sides of the reflecting faces of prism is called angle of prism.

Complete step by step answer As shown in the figure EOD is the angle between the incident incident ray and the emergent ray and is calculating the amount of deviation caused by the prism in the incident ray (AB) . Therefore, it is known as angle of deviation.

Thus option C is correct.

Note Dispersion by a prism: - The phenomenon of splitting of light into its component colours is known as dispersion.
The different component colours that appear in sequence are:
violet, indigo, blue, green, yellow, orange
and red (given by the acronym VIBGYOR).