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Question
Select from the following the best experimental set-up for tracing the path of a ray of light through a glass slab:
(A) I
(B) II
(C) III
(D) IV
Solution
To achieve best experimental set-up for tracing the path of a ray of light through a glass slab:
the point of incidence should be in the middle of the glass slab
and the incident angle should be close to 45o
Therefore, the experimental setup IV fulfills the above two conditions.
Hence, the correct answer is option (D).
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