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A plano-convex lens fits exactly into pl...

A plano-convex lens fits exactly into plano-concave lens as shown in the figure. Their plane surfaces are parallel to each other. If the lenses are made of different materials of refractive indices 1.6 and 1.5 respectively, if R is the radius of curvature of curved surface of lenses, then the focal length of the combination

A

`(R)/(6.2)`

B

`(R)/(0.2)`

C

`(R)/(3.1)`

D

`(R)/(0.1)`

Text Solution

Verified by Experts

The correct Answer is:
D
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