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

An image of the sun is formed by a lens, of the focal length of 30 cm, on the metal surface of a photoelectric cell and a photoelectric current I is produced. The lens forming the image is then replaced by another of the same diameter but of focal length 15 cm. The photoelectric current in this case is

A

`i//2`

B

i

C

2i

D

4i

Text Solution

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The correct Answer is:
B
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RESNICK AND HALLIDAY-PHOTONS AND MATTER WAVES-PRACTICE QUESTIONS (Single Correct Choice Type)
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