the radius of the curvature if a spherical mirror is 20 cm. What is it focal length
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the focal length must be 10 cm
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Solution:Radius of curvature, R= 20 cm
Radius of curvature of a spherical mirror = 2 × Focal length (f)
R= 2f
f= R/2 = 20 / 2 = 10
Hence, the focal length of the given spherical mirror is 10 cm
Radius of curvature of a spherical mirror = 2 × Focal length (f)
R= 2f
f= R/2 = 20 / 2 = 10
Hence, the focal length of the given spherical mirror is 10 cm
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