Define critical angle. Prove that mu = 1sinC, where C is critical angl

1.	Define critical angle. Prove that mu = 1sinC, where C is critical angle.
Answer» Solution :Critical angle is the angle of incidence. When a RAY of LIGHT travels from denser to rarer MEDIUM such that that angle of REFRACTION is `90@` USING `mu_dsinc` = `mu_rsin 90@`

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Define critical angle. Prove that mu = 1sinC, where C is critical angle.

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