A) \[{{45}^{o}}\]
B) \[{{90}^{o}}\]
C) \[{{65}^{o}}\]
D) \[{{43.5}^{o}}\]
Correct Answer: B
Solution :
Critical angle C is equal to incident angle if ray reflected normally. \[\therefore \] \[C={{90}^{o}}\]You need to login to perform this action.
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