Question

if the angle of reflection is 0 what is the angle of incidence?

Answer 1

Answer:

If the angle of reflection is zero then the angle of incidence is also zero.

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Answer 2

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Here is the Answer

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When angle of reflection is 0, it means the ray of light get reflected coinciding with the normal.

For a plane mirror.

It happens when ray of light strikes the mirror at 90° with surface of mirror. The light retraces its path. So here both angle of incidence and reflection is 0

But in case of spherical mirrors

It is not necessary that when angle of reflection is 0 then angle of incidence is also 0

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