Critical angle of electromagnetic radiation takes place if$? – McqOptions

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1.	Critical angle of electromagnetic radiation takes place if$?
A.	Angle of incidence is equal to angle of refraction
B.	Angle of incidence is greater than the angle of refraction
C.	Angle of incidence is equal to 90¬¨‚àû
D.	Angle of refraction is equal to 90¬¨‚àû
Answer» E.

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