Angle of a prism is 30° and its refractive index is √2 and one of the surfaces is silvered. At what angle of incidence, a ray should be incident on one surface so that after reflection from the silvered surface, it retraces its path

Question:

Options :

(a) 30 degtree
(b) 60 degree
(c) 45 degree
(d) sin-1 √1.5

Answer :

Answer Steps :

step 1

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