What is the angle between the plane of the mirror and the plane containing
incident ray, the normal and the angle of reflection?
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Answer:60 degrees
Explanation:It is 30 degrees. The sum of the angles of incidence and this angle (30) makes a right angle, so the angle of incidence is 90-30=60degrees. As the angle of incidence and the angle of reflection are equal, both angles are equal to 60 degrees
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