Question

A ray of light enters a spherical drop of water of refractive index $\mu$ as shown in the figure. Select the correct statement:

• A. Incident rays are partially reflected at point $A$.
• B. Incident rays are totally reflected at point $A$.
• C. Incident rays are totally transmitted through $A$
• D. None of these

Answer 1

The correct option is A Incident rays are partially reflected at point $A$.

From Snell's law,

$\mu \sin \alpha =\sin \varphi$

$\sin \alpha =\frac{1}{\mu }\sin \varphi <\frac{1}{\mu }$

$\alpha$ is less than critical angle.

Therefore, the light ray will be partially reflected at point A.