A normally incident ray reflected at an angle of \[{{90}^{o}}\]. The v – McqOptions

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1.	A normally incident ray reflected at an angle of \[{{90}^{o}}\]. The value of critical angle is [RPMT 1996]
A.	\[{{45}^{o}}\]
B.	\[{{90}^{o}}\]
C.	\[{{65}^{o}}\]
D.	\[{{43.2}^{o}}\]
Answer» C. \[{{65}^{o}}\]

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