Question

1) A ray of light is incident on a plane mirror making an angle of 40° with the normal at
the point of incidence. What is the angle of reflection ?​

Answer 1

Answer:

According to the first law of reflection of light,angle of reflection is always equal to angle of incident.

So,angle of reflecrion will be equal to angle of incident which means it will be 40°

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Answer 2

Answer:

The Angle between the incident & respected rays is 80 degrees.

Incident angle = angle of the incident ray to the normal.

Reflections angle = Angle of the reflected ray to normal.

For any mirror, incident angle = reflection angle.

The Angle between incident & reflection rays = incident angle and reflection = 40 + 40 = 80 degrees.

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Explanation: