A ray of light strikes a plane mirror PQ at an angle of incidence of 30 degree , is reflected from the plane mirror and then strikes a second plane mirror QR placed at right angles to the first mirror. The angle of reflection at the second mirror is:
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30 degree as in 1st mirror
VenkatSwaraj:
no
if the angle of reflection is 30 degree there is no rule that it will fall on second mirror which is perpendicular to the first mirror with same angle.
show me the proof
the answer is 60 degree
https://www.meritnation.com/ask-answer/question/a-ray-of-light-strikes-a-plane-mirror-pq-at-an-angle-of-inci/science/12136445
see this you will understand
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