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Under what condition in an arrangement of two plane mirrors, incident ray and reflected ray will always be parallel to each other, whatever may be angle of incidence. Show the same with the help of diagram.
Answers (1)
Answer:
When two plane mirrors are at right angles to each other, incident ray and reflected ray will always be parallel to each other, whatever may be the angle of incidence. From the diagram put any value of i the deviation will always be 180 degrees. This means that incident ray and reflected ray will always be parallel; irrespective of value of angle of incidence.
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