In total internal reflection, when the angle of incidence is equal to the critical angle for the pair of media in contact, what will be angle of refraction ?

180 °

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0 °

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equal to angle of incidence

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90 °

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Solution

The correct option is D $90 °$
At critical angle,

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Similar questions

For total internal reflection to occur, incidence angle must be greater than the critical angle.

θ_{i C}

θ_{i B}

s i n θ_{i C} / s i n θ_{i B} = n = 1.28

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