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A plano-convex lens P and a concavo-conv...

A plano-convex lens P and a concavo-convex lens Q are in contact as shown in figure. The refractive index o fthe material of the lens P and Q is `1.8 and 1.2` respectively. The radius of curvature of the concave surface of the lens Q is double the radius of curvature of the convex surface. The convex surface of Q is silvered.

If the plane surface of P is silvered as shown in figure, the system acts as

A

Convex mirror of focal length 24 cm

B

Concave mirror of focal length 8 cm

C

Concave mirror of focal length 24 cm

D

Convex mirror of focal length 8 cm

Text Solution

Verified by Experts

The correct Answer is:
C
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