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Question

The work function of a metal is 3.4 eV if the frequency of incident radiation is increased to twice, then the work function of the metal becomes

A
3.4 eV
B
6.8eV
C
1.7 eV
D
7.2 eV
Solution
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Correct option is A. 3.4 eV
$$\begin{array}{l}\text { The work function of a metal is an inherent } \\\text { property of the metall itself and it doesnot } \\\text { change with the frequency of the incident light. } \\\text { So workfunction remain same as } 3.4 \text { e.v }\end{array}$$

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