Optics Question 964
The wavelength of light in two liquids ‘x’ and ‘y’ is $ 3500\text{Å} $ and $ 7000\text{Å} $, 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{350}{700}=\frac{1}{2} $
Therefore $ C=30^{\circ} $
BETA
