Question

find the focal length of a convex mirror whose radius of curvature is 30cm​

Answer 1

Answer:

15 cm

Explanation:

Given that,

There is a convex mirror.

Also, given that,

Radius of curvature, r = 30cm

To find the focal length.

Let the required focal length be f.

But, we know that,

• r = 2f

Therefore, we will get,

=> f = r/2

Substituting the value of r,

Therefore, we will get,

=> f = 30/2

=> f = 15

Hence, the required focal length is 15 cm.

Answer 2

heyyya buddy

R = 2f

f= R/2

f = 30/2

f= 15

hope my answer helps you