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The radius of curvature of the curved su...

The radius of curvature of the curved surface of a plano-convex lens is 20 cm. If the refractive index of the material of the lens be 1.5, it will

A

act as a convex lens only for the objects that lie on its curved side.

B

act as a concave lens for the objects that lie on its curved side.

C

act as a convex lens irrespective of the side on which the object lies.

D

act as a concave lens irrespective of side on which the object lies.

Text Solution

Verified by Experts

The correct Answer is:
A, B, C, D
For plano convex lens,R=20 cm,`mu=1.5`
`f=(R)/(mu-1)=(20)/(1.5-1)=(20)/(0.5)=40` cm
As here `f gt 0 implies` It acts like a convex lens.
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