The radius of curvature of a spherical mirror is 20 cm. What is its focal length?

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Solution

Radius of curvature, R = 20 cm

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

R = 2f

Hence, the focal length of the given spherical mirror is 10 cm.

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The radius of curvature of a spherical mirror is 20 cm. What is its focal length?

Radius of curvature, R = 20 cm Radius of curvature of a spherical mirror = 2 × Focal length (f) R = 2f Hence, the focal length of the given spherical mirror is 10 cm.

Radius of curvature, R = 20 cm

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

R = 2f

Hence, the focal length of the given spherical mirror is 10 cm.