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 reflected 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 then 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

Since `theta lt theta_(c)` both reflection and refraction will take place. From the figure, we can see that angle between reflected and refracted rays, `alpha`, is less than `180^(@)-2theta`.
`:.` Option (c) is correct.