Question

A ray of light makes an angle of 50° with the surface S1 of the glass slab. Its angle of incidence will be ____.
Options:
A. 50°
B. 40°
C. 140°
D. 0°

Answer 1

HELLO DEAR FRIEND

SINCE

$\large \it \bf \underline \red{angle \: of \: incedent = angle \: of \: reflection}$

so ,Its angle of incidence will be A. 50

HOPE IT HELPS YOU DEAR FRIEND THANKS

Answer 2

Answer:

(B). The incidence angle will be $40^{\circ}$.

Explanation:

Given that,

A ray light makes an angle of $50^{\circ}$ with the surface S₁ of the glass slab.

Incidence angle: The incidence angle is the angle between the incidence ray and normal line.

According to figure,

The light ray makes an angle of $50^{\circ}$ with the surface.

Then,

The incidence angle will be $40^{\circ}$.

Hence, The incidence angle will be $40^{\circ}$.