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} $
