A light ray incidents at angle of\[60{}^\circ \]in denser medium in such a way so that reflected and refracted rays remain perpendicular to each other. Refractive index of denser medium relative to rarer medium will be
A) \[\mu =\sqrt{3}\]
B) \[\mu =\frac{1}{\sqrt{3}}\]
C) \[\mu =\sqrt{2}\]
D) \[\mu =\frac{1}{\sqrt{2}}\]
Correct Answer:
A
Solution :
According to question. \[\mu =\frac{\sin i}{\sin r}=\frac{\sin 60{}^\circ }{\sin 30{}^\circ }\] \[=\frac{\sqrt{3}/2}{1/2}=\sqrt{3}\]