Published by:
CGP EDU Academic Team
Published on: August 23, 2026
A convex lens of focal length 
forms an image of an extended source of light on a photoelectric cell. A current I is produced. The lens is replaced by another convex lens having the same diameter but focal length 
. The photoelectric current now is:
A
B
4 I
C
2 I
D
I
Text Solution
Verified by ExpertsThe correct answer is:
D
As amount of energy incident on cell is same so current will remain same.
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