$(a)\;\sqrt 2,\frac {1}{\sqrt 2} \\ (b)\;\frac {1}{2}, \sqrt 2 \\ (c)\;\sqrt 3,\frac {2}{\sqrt 3} \\ (d)\;\sqrt 2,\frac {2}{\sqrt 3} $

Want to ask us a question? Click here

Browse Questions

Ad |

0 votes

0 votes

Critical angle is angle of incidence at which angle of refraction becomes $90^{\circ}$

Critical angle for material $1= 45^{\circ}$

$\mu =\large\frac{1}{\sin \theta_c}$

$\mu_1 =\large\frac{1}{\sin 45}$

$\qquad= \large\frac{1}{2/\sqrt 2}$

$\mu_1 =\sqrt 2$

Critical angle for material $2= 60^{\circ}$

$\mu_1 =\large\frac{1}{\sin 60}$

$\qquad= \large\frac{1}{\sqrt 3/2}$

$\mu_2= \large\frac{2}{\sqrt 3}$

Hence d is the correct answer.

Ask Question

Take Test

x

JEE MAIN, CBSE, NEET Mobile and Tablet App

The ultimate mobile app to help you crack your examinations

...