Question

A ray of light incident on a refracting surface. If the angle of incidence 60° and the angle of
refraction is 45°, then angle of deviation is​

Answer 1

Given:

A ray of light incident on a refracting surface. If the angle of incidence 60° and the angle of refraction is 45°.

To find:

Angle of Deviation

Calculation:

Let light be incident at the interface of 2 media. The angle of incidence be i and angle of refraction be r.

Let deviation be $\delta$

Since light is going from rarer to denser medium , hence :

$\boxed{ \sf{ \delta = \angle i - \angle r}}$

$= > \delta = 60 \degree - 45 \degree$

$= > \delta = 15 \degree$

Deviation is 15° in CLOCKWISE direction.