Electronmagnetic radiations having lambd...

Electronmagnetic radiations having `lambda=310Å`are subjected to a metal sheet having work function `=12.8eV`. What will be the velocity of photoelectrons with maximum Kinetic Energy….

0, no emission will occur

`4.352xx10^(6)` m/s

`3.09xx10^(6)` m/s

`8.72xx10^(6)` m/s

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