Photoelectric emission is observed from a metal surface when the metal – InterviewSolution

1.	Photoelectric emission is observed from a metal surface when the metal is subjected to radiations of incident frequencies ν1 and ν2 (where ν1>ν2). If the kinetic energies of the photoelectrons emitted in the two cases are in the ratio 2:1, then the threshold frequency v0 of the metal is:
Answer» Photoelectric emission is observed from a metal surface when the metal is subjected to radiations of incident frequencies $ν_{1}$ and $ν_{2}$ (where $ν_{1} > ν_{2}$ ). If the kinetic energies of the photoelectrons emitted in the two cases are in the ratio $2 : 1$ , then the threshold frequency $v_{0}$ of the metal is:

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