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Question
Define the term Focus of a concave mirror.
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Solution
The focus of a concave mirror is a point on the principal axis of the mirror, where all the rays travelling parallel to the principal axis and close to it after reflection from the mirror converge to that point.
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RELATED QUESTIONS
Define Radius of curvature of the spherical mirror
What is the relation between the focal length and radius of curvature of a spherical mirror (concave mirror of convex mirror)? Calculate the focal length of a spherical mirror whose radius of curvature is 25 cm.
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(C) Should move the mirror and screen both towards the sun.
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