Question 137: Ray Optics

Question

The angle of deviation through a prism is minimum when
(A) Incident ray and emergent ray are symmetric to the prism.
(B) The refracted ray inside the prism becomes parallel to its base
(C) Angle of incidence is equal to that of the angle of emergence
(D) When angle of emergence is double the angle of incidence
Choose the correct answer from the options given below :

Accepted Answer

Deviation is minimum in prism when :
i = e, r
1
= r
2
and ray inside prism is parallel to base of prism.

Answer

Statements (B) and (C) are true

Answer

Only statements (A) and (B) are true

Answer

Statements (A), (B) and (C) are true

Answer

Only statement (D) is true

Ray Optics

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