An image of the sun is formed by a lens ...

An image of the sun is formed by a lens of focla length 50 cm on a photosensitive surface of a photoelectric cell and it produces a current I.The lens is then replaced by another lens of same diameter but of focal length 25 cm.The photoelectric current produced will be

A

`I//2`

B

2 I

C

I

D

4 I.

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MODERN PUBLICATION-UNIT TEST -07-EXERCISE

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