the number of
reflection by two plane mirror is proportional to the angle they are placed,
when the angle , the number of image formed is 360/Q,
if the angle is a
multiple of 360, then the number of images formed is given by
360/Q -1, because two
of the images will overlaps.
for examle if two plane mirror are placed at 50 degree against each other the number of image formed will be 360/50
and for two plane mirors places at 60 degree te number of images formed will be 360/60 -1 = 5,
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