1.

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

Answer»

`6.4 XX 10^(-19) J`
`6.8 xx 10^(-19) J`
`4.4 xx 10^(-19) J`
`6.4 xx 10^(-24) J`

ANSWER :C


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