Question

The parallel beam of light, after reflecting from the reflecting surface of a spherical
mirror, meet at a point on the principal axis which is at a distance of 7 cm form the pole of the mirror. Find the radius of curvature of the spherical mirror.

Answer 1

Answer:

14cm is the radius of the curvature of the spherical mirror.

Explanation:

the point where the parallel beam of light meets the principal axis is the focal point/ focus of the spherical mirror. The radius of the curvature of the spherical mirror is double the focal length. ( focal length is the distance between the pole and the focal point/ focus). Hence, the radius is 14 cm.

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