If the Refractive Index of Glass Is 1 $\circ$
B)66 $\circ$

Multiple Choice

If the refractive index of glass is 1.5 and the refractive index of a particular liquid is 1.38,then calculate the value for the critical angle of total internal reflection at the liquid-glass interface.

A) 23.1 ^$\circ$
B) 66.9 ^$\circ$
C) 82.8 ^$\circ$
D) 42.6 ^$\circ$
E) None of these is correct.