Question

what is minimum threshhole frequency

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Answer 1

Explanation:

Threshold frequency is defined as the minimum

frequency of light which causes electrons to be emitted from a metal surface. If no electrons are ejected, this means that the frequency of the light is less than the threshold frequency.

The photoelectric threshold frequency, symbolized by the Greek letter nu with subscript zero, ν0, is that frequency at which the effect is barely possible; it is given by the ratio of the work function symbolized by the Greek letter psi, ψ, to Planck's constant

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Answer 2

Answer:

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Threshold frequency is the minimum frequency of the incident radiation below which photoelectric emission is not possible irrespective of the intensity of the incident radiation.At the limiting frequency called the " threshold frequency ", the kinetic energy of the released electron is zero. Setting KE = 0 and replacing f by fth, we get: h fth = Wo or fth = Wo / h. The above formula gives the threshold frequency, fth .