Optics Question 964

Question: The wavelength of light in two liquids ‘x’ and ‘y’ is $ 3500{AA}$ and 7000${AA} $ , then the critical angle of x relative to y will be

Options:

A) $ 60{}^\circ $

B) $ 45{}^\circ $

C) $ 30{}^\circ $

D) $ 15{}^\circ $

Show Answer

Answer:

Correct Answer: C

Solution:

The critical angle C is given by $ \sin C=\frac{n _{2}}{n _{1}}=\frac{{\lambda _{1}}}{{\lambda _{2}}}=\frac{3500}{7000}=\frac{1}{2} $

Therefore $ C=30^{o} $



NCERT Chapter Video Solution

Dual Pane