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Explain the 2nd law of refraction (also known as snell's law)

Explain refractive index briefly

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User V Sebi
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The second law of refraction states that

The ratio of sin of angle of incidence and sin of angle of refraction is equal to a constant which is known as refractice index...

It is denoted as:


\large \boxed{ \purple{ \tt ( \sin(i) )/( \sin(r) ) = \mu \: (refractive \: index) }}

User Matt Winckler
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