Question

If all rays falling on a concave mirror are parallel to the principal axis of the mirror, what happens to them after reflection from the mirror?​

Answer 1

Answer:

All the parallel rays to the principal axis will converge and fall at the focus after reflection, forming a point sized image

Answer 2

Concave mirror are parallel to the principal axis of the mirror

Explanation:

• Principal focus at a point can be explained as all rays parallel and close to the principal axis converge after reflection from concave mirror.

• Parallel to the principal axis falls on a convex mirror, the mirror diverts all the rays away from its focus.
• Rule : When a ray of light which is parallel to the principal axis it gets reflected and then it passes through its focus.

• Rule : When a ray of light passes through the centre of curvature then it gets reflected back along the same path or way.