Question

sarla got a concave mirror of radius 29cm At what distance from the mirror will its focus be located​

Answer 1

Explanation:

For a concave mirror, the image distance becomes equal to the object distance, i.e., the image is formed at the object position when the object is placed on the centre of curvature for the concave mirror.

So, object distance= radius of curvature.

We know that, for a spherical mirror, radius of curvature=2× focal length.

Given, focal length=25cm

Therefore, object distance= radius of curvature=2×25cm=50cm