Question

The radius of curvature of a spherical mirror is 20 cm. what is the focal length?​

Answer 1

r=2f

r/2 =f

20/2 = f

10 =f

focal length =10cm

Answer 2

HEY FRIEND HERE IS UR ANSWER ,

Radius of curvature (R) = 20 cm

Radius of curvature of the spherical mirror = 2 × Focal length (f) R = 2f

f= R/2 = 20 / 2 = 10

Therefore, the focal length of the spherical mirror is 10 cm.

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