A convex lens of focal length \(40 cm\) forms an image of an extended source of light on a photoelectric cell. A current…
Q1
A convex lens of focal length \(40 cm\) 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 \(20 cm\). The photoelectric current now is :
[JEE Main 2024, 27 Jan (Shift 1)]
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