Question

The radius of curvature of a spherical mirror is 30 cm .what is it focal length and centre of curvature?

Answer 1

r/2=f
30/2=15
so,15 is the focal length

Answer 2

Answer:

The required focal length is of 15 cm in magnitude.

Explanation:

We know that the radius of the curvature is always double of the focal length.

Here , we are having the radius so we can say that the focal length is half the radius given.

Given radius of the curvature = 30 cm

And then the focal length of the curvature = 30/2 = 15 cm .

What is radius of curvature?

The radius of the curvature is the radius of the mirror of which the spherical mirror is a part of .