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20 January, 14:07

A concave mirror has a focal length of 30.0 CM. an object is placed 15.0 CM from the mirror. what is the radius of curvature of the mirror?

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  1. 20 January, 14:17
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    60 cm

    Explanation:

    We are given;

    Focal length of a concave mirror as 30.0 cm Object distance is 15.0 cm

    We are required to determine the radius of curvature.

    We need to know that the radius of a curvature is the radius of a circle from which the curved mirror is part.

    We also need to know that the radius of curvature is twice the focal length of a curved mirror.

    Therefore;

    Radius of curvature = 2 * Focal length

    Therefore;

    Radius of curvature = 2 * 30 cm

    = 60 cm
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