The radius of curvature of a spherical mirror is 20 cm. What is its focal length
The radius of curvature of a spherical mirror is 20 cm. What is its focal length?
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Here, radius of curvature, R = 20 cm.
Focal length, f=?
We know, that, f =R/2 = 20/2 cm = 10 cm
The focal length of spherical mirror is 10 cm.
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