Question

Numerical: [2+2+1]

a. If the angle between the mirror and the incident ray is 45°, then what is the

angle between incident ray and reflected ray?

b. If the angle between incident ray and reflected ray is 90°, what is the angle of

incidence?

c. What is the angle of reflection in case of normal incidence?no irrelevant answer ​

Answer 1

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Answer 2

A. Angle i = angle r in mirror so if angle i is 45 degree then angle r would also be 45 degree.

B. Angle i + angle r = 90 degree
Since Angle i = angle r,
2 (angle i )= 90
Angle i = 90/2
Therefore angle i is 45 degrees.

C. 90 degrees with respect to the surface and 0 degrees with respect to normal.