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

Answer»

SOLUTION :Radius of curvature
`R=20` CM
Radius of curvature of a SPHERICAL MIRROR
`=2xx` focal length (f)
`R=2f`
`f=R/2=20/2=10cm`
Hence the focal length of the given spherical mirror is 10 cm.


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