According to the laws of refraction (Snell’s law)

Foundation

Physics Foundation

Reflection from spherical mirror

Question

∠ i = ∠ r

sin i = sin r

tan i = tan r

$\frac{\sin i}{\sin r} = constant$

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According to the second law of refraction, also known as Snell's law, the ratio of sine of the angle of incidence to the sine of angle of refraction is a constant for a given pair of media.

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