Question

choose the correct answer. Relation between focal length f and radius of curvature R of a spherical mirror is Options 1 R-f/2 . 2 f-R . 3 f-R/2. 4 f-1/R​

Answer 1

The relation between the focal length and the radius of curvature of a spherical mirror is f = R / 2

option 3

Explanation:

• the radius of curvature is usually twice the focal length of a spherical mirror. As a result of this the diameter of the spherical mirror is 4 times the focus of the spherical mirror.

• The diameter of a spherical mirror means the diameter of the circle of which the spherical mirror is a part. It has no relationship with the the aperture of the mirror if the mirror is not perfectly semicircular in nature.

To know more about diameter of a spherical mirror,

The diameter of the spherical mirror in which reflection takes place is ...

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