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The convex surface of a thin concavo-con...

The convex surface of a thin concavo-convex lens of glass of refractive index 1.5 has radius of curvature 10 cm. The concave surface has a radius of curvature 30 cm. The convex side is silvered and placed on a horizontal surface. Then where should a pin be placed on the optic axis such that its image is formed at the same place?

A

`7.5 cm`

B

`12 cm`

C

`15 cm`

D

`21 sqrt(2)` cm

Text Solution

Verified by Experts

The correct Answer is:
A
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