What is the critical angle? a) The angle of incidence at which refraction does not occur b) The angle of refraction at which total internal reflection occurs c) The angle of incidence at which total internal reflection occurs d) The angle of refraction at which refraction is maximum

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What is the critical angle?
a) The angle of incidence at which refraction does not
occur
b) The angle of refraction at which total internal
reflection occurs
c) The angle of incidence at which total internal
reflection occurs
d) The angle of refraction at which refraction is
maximum
Transcribed Image Text:What is the critical angle? a) The angle of incidence at which refraction does not occur b) The angle of refraction at which total internal reflection occurs c) The angle of incidence at which total internal reflection occurs d) The angle of refraction at which refraction is maximum
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