The relation between focal length F and radius of curvature R of a spherical mirror of small aperture is given by

F = 2R

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F = R

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F = \frac{R}{2}

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F = \frac{R}{4}

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Solution

The correct option is C $F = \frac{R}{2}$
For spherical mirror of small aperture, $F = \frac{R}{2}$
Hence, the correct answer is option (a).

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The relation between focal length F and radius of curvature R of a spherical mirror of small aperture is given by

The correct option is C F=R2For spherical mirror of small aperture, F=R2 Hence, the correct answer is option (a).

The correct option is C $F = \frac{R}{2}$
For spherical mirror of small aperture, $F = \frac{R}{2}$
Hence, the correct answer is option (a).