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Define the focus of a concave mirror. If the radius of curvature of a convex mirror is 30 cm, what would be its focal length?

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Define the focus of a concave mirror. If the radius of curvature of a convex mirror is 30 cm, what would be its focal length?

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The point on the principal axis where all the rays parallel to it meet after reflection is called focus. Since, R = 30 cm and f=R/2 we have, f=+15 cm for a convex mirror.

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