A) \[60{}^\circ \]
B) \[45{}^\circ \]
C) \[30{}^\circ \]
D) \[0{}^\circ \]
Correct Answer: D
Solution :
Here refractive index \[(\mu )=2\] Angle of refraction (r) = 30° As it is clear that for retracing its path the angle of emergence should be zero.You need to login to perform this action.
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