Question

What is the focal length of a spherical mirror if the radius of curvature is 30 cm?

Answer 1

Answer:

Step-by-step explanation:

For spherical mirrors of small apertures, the radius of curvature is found to be equal to twice the focal length. We put this as R = 2f . This implies that the principal focus of a spherical mirror lies midway between the pole and centre of curvature.

Answer 2

HEYA MATE HERE IS YOUR ANSWER...

WE KNOW THAT....

R=f/2

So.... R = 30 cm

30 = f/2 =» f = 15 cm

So, converting cm ----------»m

15/100 =====» 0.15 m

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