Question

find a focal legth of a convex mirror whose radius of culvature is 30 cm​

Answer 1

Explanation:

thoroughgoing or extreme, especially as regards change from accepted or traditional forms: a radical change in the policy of a company. favoring drastic political, economic, or social reforms: radical ideas; radical and anarchistic ideologues

Answer 2

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.