10-3 W of 50000ALight is directed on a photoelectric cell. If the current in the cell is 0.16 μA, the percentage of incident photons which produce photoelectrons, is
A
0.4 %
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B
0.04 %
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C
20 %
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D
10 %
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Solution
The correct option is B
0.04 %
The number of photons incident on photocell per unit of time is,