A ray of light strikes the glass slab at an angle $40^\circ$ with the surface of the slab. Then the angle of incidence will be _______°.

Question

KollegeApply · Accepted Answer

A ray of light strikes the glass slab at an angle $40^\circ$ with the surface of the slab. Then the angle of incidence will be $50^\circ$. Explanation: The angle of incidence is defined as the angle between the normal drawn at the point of incidence and the incident light ray. Here the light ray is falling at the point of incidence at an angle of $40^\circ$. Thus: Glancing angle is given as $40^\circ$ Hence angle of incidence $\angle$i = $90^\circ$ - $40^\circ$ $\angle$i = $50^\circ$

AChoose Your Answer