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In photo electric effect, the energy pho...

In photo electric effect, the energy photon striking a metallic surface is `5.6 xx 10^(-19)J`. The kinetic energy of the ejected electrons is `12.0xx 10^(-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^(-20)J`

Text Solution

Verified by Experts

The correct Answer is:
C
`E = w_(0) +K.E`
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