If the refracting angle of a prism is 60 ° and the minimum deviation 30 ° , the angle of incidence will be

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Question: Answered & Verified by Expert

If the refracting angle of a prism is

60 °

and the minimum deviation

30 °

, the angle of incidence will be

PhysicsRay OpticsNEET

Options:

A $30 °$
B $45 °$
C $60 °$
D $90 °$

Solution:

2734 Upvotes Verified Answer

The correct answer is:

45 °

δ_{m} = 30 °

A = 60 °

i = (\frac{A + δ_{m}}{2})

\Rightarrow i = (\frac{60 + 30}{2})

i = 45 °

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