Question

A convex lens of focal length 24 cm is placed
12 cm in front of a convex mirror. It is found
that when a pin is placed 36 cm in front of the
lens, it coincides with its own inverted image
formed by the lens and the mirror. Then the
focal length of the mirror is
(a) 45 cm
(b) 60 cm
(c) 15 cm
(d) 30 cm​

Answer 1

Answer:

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