A ray of light travelling in water is incident on its surface open to air. The angle of incidence is `theta`, which is less than the critical angle. Then there will be

Options

A. only a refiected ray and no refracted ray
B. only a refracted ray and no reflected ray
C. a reflected ray and a refracted ray and the angle between them would be less than `180^(@)-2theta` ,
D. a reflected ray and a refracted ray and the angle between them would be greater than `180^(@)-2theta` ,

Answer

C

Explanation

There will be partial reflection and refraction as shown in figure. Angle between the reflected ray and the refracted ray `=180^(@)-(theta+phi)` which is less than `180^(@)-2theta` (because `phigttheta`)