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An image of the sun is formed by a lens of focal length on the metal surface of a photoelectric cell and it produces a current I. The lens forming the image is then replaced by another lens of the same diameter but of focal length of
. The photoelectric current in this case will be - (In both cases the plate is kept at focal plane and normal to the axis lens)
Option: 1
Option: 2
Option: 3
Option: 4
Answers (1)
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