The speed of light in media $M_{1}$ and $M_{2}$ is $1.5×10_{8}$ m/s and $2.0×10_{8}$ m/s respectively. A ray of light enter medium $M_{1}$ to $M_{2}$ at an incidence angle i. If the ray suffers total internal reflection, the value of i is?

A

Equal to or less than $sin_{−1}(53 )$

B

Equal to or greater than $sin_{−1}(43 )$

C

Less than $sin_{−1}(32 )$

D

Equal to $sin_{−1}(32 )$

Medium

Open in App

Updated on : 2022-09-05

Solution

Verified by Toppr

Correct option is B)

In total internal reflection, the angle of incidence (1) must be greater than critical angle $C$