If 'R' is the radius of curvature of a spherical mirror and 'F' is the focal length of that mirror, then which of the following is true?

R = \frac{F}{2}

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F = \frac{R}{2}

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F = R

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F = \frac{R}{3}

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Solution

The correct option is B $F = \frac{R}{2}$
The focal point occurs at the midpoint between pole and radius of curvature. So, if radius of curvature is $R$ and focus is $F$ , then, $F = \frac{R}{2}$ .

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If 'R' is the radius of curvature of a spherical mirror and 'F' is the focal length of that mirror, then which of the following is true?

The correct option is B F=R2The focal point occurs at the midpoint between pole and radius of curvature. So, if radius of curvature is R and focus is F, then, F=R2.

The correct option is B $F = \frac{R}{2}$
The focal point occurs at the midpoint between pole and radius of curvature. So, if radius of curvature is $R$ and focus is $F$ , then, $F = \frac{R}{2}$ .