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One face of a prism of refractive index 1.5 and angle 75° is covered with a liquid of refractive index $\frac{3\sqrt{2}}{4}$. What should be the angle of incidence of light on the clear face of prism for which light is just totally reflected at the liquid covered face? |
$\sin^{-1}(\frac{1}{4})$ $\sin^{-1}(\frac{1}{2})$ $\sin^{-1}(\frac{3}{4})$ $\sin^{-1}(\frac{2}{3})$ |
$\sin^{-1}(\frac{3}{4})$ |
The correct answer is Option (3) → $\sin^{-1}(\frac{3}{4})$ |
