Question

A ray of light travels from an optically denser to a rarer medium. The critical angle for the two media is C. The maximum possible deviation of the ray will be

• A. $\frac{\pi}{2}-C$
• B. 2 C
• C. $\pi - 2\, C$
• D. $\pi - C$

Answer 1

Answer: (C)

$\pi - 2\, C$

Answer 2

When $i_1$ > C, deviation is maximum , Here d = $\pi$ - 2C