Question

1 Angle of incident ray with normal is 30°. The
incident ray after reflection will deviate through an
angle
​

Answer 1

Answer:

Question fails to specify if the angle of the incident ray is to the mirror or to the normal.

If we read that to refer to “the angle of incidence” then that is the angle to the normal.

30deg incidence means 30deg reflection … from the normal.

The angle the ray deviates from it’s course, though, is not the same as the angle of incidence or of reflection.

You can work it out from a sketch … draw in a dotted line that continues the original path of the ray, as if the mirror were not there.

Then it is a matter of adding up the angles between the dotted line and the reflected ray.

hope it is helpful for you..

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