A point object O is placed on the axis o...

A point object O is placed on the axis of a concave mirror of radius of curvature 6 cm. Rays of light coming from O after reflection from concave mirror M are incident on a small mirror M. After reflection from M the reflected rays meet at the pole P of the concave mirror. If OP = 9cm, PM = 3 cm, then determine the nature of the mirror M and its focal length.

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The correct Answer is:

convex mirror M ; focal length = 3 cm

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