Two plane mirrors are inclined to each other at an angle of 60 degrees. If a ray of light incident on the first mirror at an angle of 30 degrees is reflected to the second mirror, it will be reflected again from the second mirror: a)perpendicular to 1st mirror b)parallel to 1st mirror c)parallel to 2nd mirror d)perpendicular to 2nd mirror. please explain your answer. Also show a diagram.

Asked by sumandeesinghrana | 12th Oct, 2010, 08:54: PM

Expert Answer:

After ploting incident and reflected rays and by simple geometry its clear that angle A = angle B.
Therefore final ray will be parallel to first mirror

Answered by  | 13th Oct, 2010, 12:22: AM

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