JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

1 Hard

1 of 1

Application +4 | -1

Energy required to stop the ejection of electrons from

{Cu}

plate is

0.24\, \mathrm{eV}

. If radiation of

\lambda=253.7 \mathrm{~nm}

strikes the plate, the work function is

View answer and explanation

Correct option: A

4.65\, \mathrm{eV}

Option A (

4.65\, \mathrm{eV}

) is correct because the work function is calculated by subtracting the stopping potential energy from the photon energy.

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