What Is the Condition for...... | JEE Main 2022

JEE MAIN 2022

29-06-22 S2

Question

The speed of light in media ' $A$ ' and ' $B$ ' are $2.0 \times 10^{10} \mathrm{~cm} / \mathrm{s}$ and $1.5 \times 10^{10} \mathrm{chm} / \mathrm{s}$ respectively. A ray of light enters from the medium $B$ to $A$ at an incident angle ' $\theta$ '. If the ray suffers total internal reflection, then

Select the correct option:

$\theta=\sin ^{-1}\left(\frac{3}{4}\right)$

$\theta>\sin ^{-1}\left(\frac{2}{3}\right)$

$\theta<\sin ^{-1}\left(\frac{3}{4}\right)$

$\theta>\sin ^{-1}\left(\frac{3}{4}\right)$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution