Question

What is meant by work function of metal how does the value of work function influence the kinetic energy of electron liberated during photoelectron emission?

Answer 1

Answer:

Threshold energy is equal to the work function of the element. Hence work function= Energy of photon - Kinetic energy of the metal. ... So as the work function of metal increases the kinetic energy of the emitted photo electron decreases.

Answer 2

Correct explanation is given below .

We know , from quantum physics :

Maximum kinetic energy of an object is given by :

$K.E=h\nu-h\nu_o$

Here , $\nu_o$ is the threshold frequency and $h\nu_o$ is the work function .

Now , work function is the minimum amount of energy required to pull an electron from the atom .

Also , $\nu_o$ is the minimum frequency of photons required to pull an electron .

Hence , this is the correct explanation .

Learn More :

Quantum Physics

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