1
AIIMS 2018
MCQ (Single Correct Answer)
+1
-0.33

The work function of a metal is $$4.2 \mathrm{~eV}$$. If radiation of 2000 $$\mathop A\limits^o$$ fall on the metal then the kinetic energy of the fastest photoelectron is

A
$$1.6 \times 10^{-19} \mathrm{~J}$$
B
$$16 \times 10^{-10} \mathrm{~J}$$
C
$$3.2 \times 10^{-19} \mathrm{~J}$$
D
$$6.4 \times 10^{-10} \mathrm{~J}$$
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