Geometrical OpticsHard
Question
wo plane mirror A and B are aligned paralle to each other, as shown in the figure. A light ray is incident an angle 30o at a pint just inside one end of A. The plane of incidence coincids with a plane of the figure. The maximum number of times the ray undergoes reflections (including the first one) before it emerges out is
Options
A.28
B.30
C.32
D.34
Solution
d = 0.2 tan 30o =
Therefore, maximum nunber of reflections are 30.
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