MCQ
While performing the experiment on tracing the path of a ray of light through a rectangular glass slab, in which of the following experimental set $-$ ups is a student likely to get best results $?\ P_1$ and $P_2$ are the positions of pins fixed by him.
  • A
    $I$
  • B
    $II$
  • $III$
  • D
    $IV$

Answer

Correct option: C.
$III$

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