Question

if a ray of light is parallel to the principal axis then after reflection it will pass through​

Answer 1

Answer:

Rule 1: When a ray of light which is parallel to the principal axis gets reflected, it passes through its focus. Rule 2: When a ray of light passes through the centre of curvature, it gets reflected back along the same path

Answer 2

Explanation:

The Ray of light (incedent ray ) is parallel to the principal axis then the reflected ray would be parallel to Principal axis and moves back in same position but in reverse direction

This is the case for the above question if the mirror is neither concave nor convex) that is plane mirror)