Question

22. A ray of light strikes the surface of a plane mirror at an angle of 35°. The angle of reflection will be - a) 350 b) 45° c) 55° d) 65°​

Answer 1

Answer:

c) 55

Explanation:

Angle of incidence = Angle of reflection.

Angle of incidence is always measured from the normal.

ATQ,

The ray of light is being incident to the surface at an angle of 35°.

The angle between normal and the surface =90°

.

. . Angle of incidence = 90° - 35°

= 55°

Hence, angle of reflection= 55 °

Answer 2

Answer:

Correct option is

A

35 degrees

Explanation:

Angle of incidence i=35 degrees

According to laws of reflection, the angle of incidence is equal to the angle of reflection.

⟹ Angle of reflection r=i=35 degrees