A spherical mirror has a radius of curvature of 22 cm. If the mirror is convex, its focal length is
A)-11 cm.
B)-44 cm.
C)22 cm.
D)11 cm.
E)-22 cm.

Name: A spherical mirror has a radius of curvature of 22 cm. If the mirror is convex, its focal length is A)-11 cm. B)-44 cm. C)22 cm. D)11 cm. E)-22 cm.
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Question

Quizplus · Accepted Answer

The focal length (f) of a spherical mirror is half the radius of curvature (R). For a convex mirror, the focal length is positive, so f = R/2 = 22 cm / 2 = 11 cm.

A Spherical Mirror Has a Radius of Curvature of 22