Polarising angle for water is `53^@4^'`. If light is incident at this angle on the surface of water and reflected, the angle of refraction is

Options

A. (a) `53^@4^'`
B. (b) `126^@56^'`
C. (c) `36^@56^'`
D. (d) `30^@4^'`

Answer

C

Explanation

`theta_p+r=90^@` or `r=90^@-theta_p=90^@-53^@4^'=36^@56^'`.