Question

The radius of curvature of a convex mirror is 40 cm.
Find its focal length.

Answer 1

Explanation:

Focal length of a concave or convex mirror is always half of its radius of curvature..

So for this question ,

f = 40/2

 = 20 cm

Answer 2

heyyya buddy

R = 2f

f= R/2

f = 40/2

f= 20

hope my answer helps you