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If the speed of photoelectrons is 10^(4)...

If the speed of photoelectrons is `10^(4) ms^(-1)`, what should be the frequency of incident radiation on the potassium metal ? Work function of potassium = 2.3 eV.

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The correct Answer is:
`5.56 xx 10^(14) Hz`
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SL ARORA-ELECTRONS AND PHOTONS-TYPE D : Problem For Self Practice
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