Question: [ - / 1 Points ] Two plane mirrors intersect at right angles. A laser beam strikes the first of them at a'point d =
Points
Two plane mirrors intersect at right angles. A laser beam strikes the first of them at a'point from their point of intersection, as shown in the figure below. For what angle of incidence at the first mirror will this ray strike the midpoint of the second mirror which is long after reflecting from the first mirror?
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