Question.
Find the focal length of a convex mirror whose radius of curvature is 32 cm.
Find the focal length of a convex mirror whose radius of curvature is 32 cm.
solution:
Given, radius of curvature, $\mathrm{R}=+32 \mathrm{~cm}$
Focal length, $f=(1 / 2) \times$ radius of curvature
or $\mathrm{f}=(1 / 2) \times \mathrm{R}=(1 / 2) \times(+32)=+16 \mathrm{~cm}$
Given, radius of curvature, $\mathrm{R}=+32 \mathrm{~cm}$
Focal length, $f=(1 / 2) \times$ radius of curvature
or $\mathrm{f}=(1 / 2) \times \mathrm{R}=(1 / 2) \times(+32)=+16 \mathrm{~cm}$
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