Question

A ray of light is travelling an angle 20 degree with x-axis at what angle with x-axis must a plane mirror be rotated from its initial position along x-axis so that it becomes vertically upward after reflection

Answer 1

Answer:

At what angle with the horizontal must a plane mirror be placed in its path so that it becomes vertically upward after reflection. ⇒ the angle of the mirror with the horizontal = 35∘.