Dual Nature of Radiation and Matter

Question: Light of frequency $\nu$ is incident on a certain photoelectric substance with threshold frequency $\nu _0$. The work function for the substance is



1) $h\nu$
2) $h\nu _0$
3) $h(\nu - {\nu _0})$
4) $h(\nu + {\nu _0})$
Solution: Explanation: No Explanation
Photon and Photoelectric Effect

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