Q143 / 180 · AIIMS 2001 · Physics

The work function of a metal is $3.4 \mathrm{eV}$. If the frequency of incident radiation is increased to twice, then the work function of the metal becomes

Correct answer
A
$3.4 \mathrm{eV}$
B
$7.2 \mathrm{eV}$
C
$6.8 \mathrm{eV}$
D
$1.7 \mathrm{eV}$.

Solution

The work fuction of a metal is an inherent property of the metal itself and it does not change with the frequency of the incident light.

Hence, the correct answer is option: 'A'.

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