Question

What will be the angle of refraction if the angle of incidence is 0⁰?​

Answer 1

If the incident ray falls along the normal, the angle of incidence is 0 degrees, NOT 90 degrees. The angle is measured with the normal to the mirror and not with the plane of the mirror. Hence the angle of reflection is equal to 0 degrees.

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Answer 2

Answer:

If the angle of incidence is 0 them the angle of reflection will lie on the same line. thus angle of refraction will be 0 degree

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