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A radiation of wave length 3000 Å is req...

A radiation of wave length 3000 Å is required to remove an electron from a metal atom. If a radiation of wave length 2000Å is allowed to incident on the metal surface, the kinetic energy of the emitted electron in k/J mole is

A

`1.98 xx 10^(2)`

B

`3.3 xx 10^(-19)`

C

`3.3 xx 10^(-20)`

D

19.8

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The correct Answer is:
A
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AAKASH SERIES-ATOMIC STRUCTURE-Objective Exercise - 3
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