Question

please .. full solution ​

Answer 1

Answer:

1. there's a misprint in ques. 1... the first $m_{2}$ is actually $m_{1}$ because if it were m2 then the reflected would have never met m2 again. keeping that in mind... answer will be 10 degrees.

2.   30 degrees

3.   0 degrees

Explanation:

1. reflected ray from mirror 1 is making some angle on mirror 2 with the normal. In the diagram we can see that it makes 80 degrees with the mirror. also... the normal must be at 90 degrees with mirror. So, let's assume the angle of ray with normal be x degrees.

then, x + 80 = 90   => x = 10

2.   because the mirrors are parallel, there will be no change in angles of rays

3.    since the incidence is normal, the rays hit the mirror exactly at the normal. so the ray and normal actually coincide. and the angle becomes 0 degrees

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