Question

what is the first law of reflection ?​

Answer 1

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First law of reflection: According to the first law, the incident ray, reflected ray and normal, all lie in the same plane. Second law of reflection: According to the second law, the angle of reflection is always equal to the angle of incidence.

Answer 2

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The First Law of reflection States that the angle made by the incident light ray with the normal to the surface at the point of incidence is equal to angle made by the reflected light ray with the normal.