If the refractive index of glass is 1.5, wh..

Question 1 Report

If the refractive index of glass is 1.5, what is the critical angle at the air-glass interface?

sin-1

\frac{1}{2}

sin-1

\frac{1}{2}

sin-1

\frac{3}{4}

sin-1

\frac{8}{9}

Answer Details

sin ic $\frac{1}{n}$ = $\frac{1}{1 - 5}$

i = sin-1 $\frac{1}{1 - 5}$

= sin-1 $\frac{10}{15}$

= sin-1 $\frac{2}{3}$