Question

If the sum of focal length and radius of curvature
is 30 cm, what is the focal length of that spherical
mirror?​

Answer 1

Answer: hope this helps you

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Explanation: Focal length is half the radius of the mirror. With a spherical mirror this is not the focal length, as rays do not converge in one point, depending on their distance from the optical axis. But for small mirrors this will do.

Answer 2

Answer:

Explanation:

focal length is equal to half of the radius of the curvature.

focal length = 1/2 of the radius of the curvature.

= 1/2 x 30=15 cm.

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