Question
Fri September 20, 2013 By:
 

what are the critical angels of various color of VIBGYOR?

Expert Reply
Sun September 22, 2013
Critical angle of a medium depends on refractive index of the medium. Different colors of light have different wavelengths have different refractive indices. red has minimum critical angle and as we go from red to voilet in VIBGYOR critical angle increases.
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