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In a photoelectric effect, the energy of...

In a photoelectric effect, the energy of the photon striking a metallic surface is `5.6xx10^(-19)J`.
The kinetic energy of the ejected electron is `12.0xx10^(-20)J` . The work function is

A

`6.4 xx 10^(-19) J`

B

`6.8 xx 10^(-19) J`

C

`4.4 xx 10^(-19) J`

D

`6.4 xx 10^(-24) J`

Text Solution

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The correct Answer is:
C
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