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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

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

B

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

C

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

D

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

Text Solution

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The correct Answer is:
A
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VMC MODULES ENGLISH-RAY OPTICS AND WAVE OPTICS -EFFICIENT
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  10. The focal length of a convex lens of R.I. 1.5 is f when it is placed i...

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  11. A point object O is placed on the principal axis of a convex lens of f...

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  12. A plano-convex lens when silvered in the plane side behaves like a con...

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  15. An object is placed at a point distant x from the focus of a convex le...

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