Question

The refractive index for a prism is given as \( \mu = \cot \frac{A}{2} \). Then, angle of minimum deviation in terms of angle of prism is

• A. \( 90^\circ A \)
• B. \( 2A \)
• C. \( 180^\circ - 2A \)
• D. \( 180^\circ - 2A \)

Hint:

For a prism, the refractive index can be related to the angle of deviation and the angle of the prism using trigonometric formulas.

Answer 1

The Correct Option is B

The refractive index \( \mu \) is related to the angle of minimum deviation using the equation \( \mu = \cot \frac{A}{2} \), where \( A \) is the angle of the prism and the angle of minimum deviation is given by \( 2A \).