Question

A plane mirror is inclined at 40 degree to the floor.An incident ray parallel to the floor strikes the mirror and a reflected ray is formed. What is the angle of reflection?

Answer correctly or I will report you.​

Answer 1

Explanation:

Using the law of reflection of light, Angle of incidence = angle of reflection = 40°. Hence the angle of reflection is 40°, which means that the reflected ray will make an angle of 40° with the normal to the reflecting surface.

Answer 2

Answer:

The question clearly states the angle made by the light ray with mirror is 40°. This is NOT angle of incidence. Angle of incidence is the angle made by light ray with the vertical line drawn from the point where it lands on the mirror. This is 90 - 40 = 50°.

Now:

Angle of incidence = Angle of reflection = 50°

So, light bends by 50 + 50 = 100°.

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