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Question

When radiation is incident on a photoelectron emitter, the stopping potential is found to be 9V. If e/m for the electron is 1.8×1011Ckg1. What is the max. speed of the photoelectrons?

A
6×105ms1
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B
8×105ms1
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C
1.8×106ms1
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D
1.8×105ms1
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