The radius of the sphere of which the reflecting surface of a spherical mirror forms a part, is called ...............

Centre of curvature

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Radius of curvature

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Focus

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Pole

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Solution

The correct option is B Radius of curvature
The radius of the sphere of which the reflecting surface of a spherical mirror forms a part, is called the radius of curvature of the mirror. Here, the distance $R$ is the radius of curvature in the figure.

Answer-(B).

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The centre of the sphere of which the spherical mirror forms a part is called centre of curvature.

If the inner surface of a spherical mirror is reflecting it is called _____ mirror.

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