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

A plano- convex lens fits exactly into a plano- concave lens. Their plane surfaces are parallel to each other. If lenses are made of different materials of refractive indices `mu_(1)` and `mu_(2)` and R is the radius of curvature of the curved curface of the lenses, then the focal length of the combination is

A

`(2R)/(mu_(1)-mu_(1))`

B

`R/(2(mu_(1)+mu_(2))`

C

`R/(2(mu_(1)-mu_(2)))`

D

`R/(mu_(1)-mu_(2))`

Text Solution

Verified by Experts

The correct Answer is:
D
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VMC MODULES ENGLISH-RAY OPTICS AND WAVE OPTICS -IMPECCABLE
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