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Relationship between Focus and Radius of Curvature

In the above ...

Question

In the above figure, the distance between the point P and point F is

A

Radius of curvature

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B

Focal length

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C

Aperture

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D

Centre of curvature

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Solution

The correct option is A
Radius of curvature

In the given figure the point P is pole and F is focus and the distance between pole and focus is known as focal length of the mirror.

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