A critical angle for a medium is (60^\circ.) Then the refrac... | Physics | SolveeIt | Solveeit

Today, August 20

Question

A critical angle for a medium is $60^\circ.$ Then the refractive index of the medium will be

A

$\sqrt 3$

B

$\frac{\sqrt 3}{2}$

C

$\frac{2}{\sqrt 3}$

D

$\frac{1}{\sqrt 3}$

Answer

$\frac{2}{\sqrt 3}$

Explanation

Solution

$\mu = \frac{1}{\sin\, C}$
or $\mu = \frac{1}{\sin\, 60^\circ}=\frac{1}{\sqrt 3/2 }=\frac{2}{\sqrt 3}$