Question

please answer this question​

Answer 1

Answer:

Given:

A light ray is incident normally on a plane mirror.

To find:

1. Angle of incidence

2. Direction of reflected ray

Diagram:

Please refer to the attached photo to understand better.

Concept:

Angle of incidence is the angle between the incident ray and the normal to the surface.

So , since the incident ray is normal to the surface , it means it is present at 90° to the surface.

So the angle of incidence is 0°.

Now, As per rules of reflection, we know that angle of incidence is equal to angle of reflection.

So angle of reflection = 0°.

So the reflected ray traces back the same path . So it remains normal to the mirror.

Answer 2

$\huge \bf{ \red{ \mid{ \overline{ \underline{ANSWER</p><p>}}} \mid}}$

$\huge \pink{ \bf{GIVEN:- }}$

→ As it is given the ray is falling normally on the plane mirror !!

so the digram is

↓

↓

↑

Hence, the angle of incidence = 0°

and hence the angle of reflection = 0°

→ The direction of reflected ray is through the normal.