. Study the following four experimental set-ups I, II, III and IV for the experiment
"To trace the path of a ray of light through a rectangular glass slab".
Which of the marked set-ups is likely to give best results (P1 and P2 are the positions of pins fixed on the incident ray)?
(A) I (B) II (C) III (D) IV
Best Answer
Ans. (D) IV
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