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What is true for the critical incident angle? A The incident angle is the angle for...

What is true for the critical incident angle?

A The incident angle is the angle for which the angle of refraction is 90°.

B The incident angle goes from a low to a higher index of refraction.

C The incident angle is not equal to the angle of reflection.

D The incident angle is the angle which results in dispersion.

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Answer #1

Option (A) is 100% correct.

Explanation - The critical angle is the angle of incidence where the angle of refraction is 90°. Also for critical angle the light must travel from an optically more dense medium to an optically less dense medium ( means from high index of refraction to low index of refraction )

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