If arperture of mirror increased then what will be its focal length?–increase or decrease. please answer correctly​

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If arperture of mirror increased then what will be its focal length?–increase or decrease. please answer correctly​

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Peyton 2 years 2021-06-24T13:04:21+00:00 1 Answers 0 views 0

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    2021-06-24T13:05:24+00:00

    Explanation:

    spherical mirror, the diameter of the aperture cannot be more than twice the radius of curvature. Such a mirror would have a significant spherical aberration. A large aperture mirror that can focus parallel incident light into a point would need to have a parabolic shape, such a lens would have no (theoretical) limit on its size. Spherical mirrors do not focus parallel light rays to a single focal point. The point of using an aperture much smaller that the radius of the mirror is to restrict the incoming light to a region where rays do come to a single focal point

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