Question

A student incident light beam on one mirror at an angle of 40 degree as shown in the figure then what will be the angle of reflection at mirror 2.

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need full explanation it's 2 mark question ​

Answer 1

Answer:

the answer is 10 degrees

Explanation:

40 = reflected ray (since reflected = incident ray)

180 - (40*2) = 180 - 80 = 100(straight line)

180 - (100 + 70) = 10 (angles of a triangle sum upto 180)

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