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Ground state energy of H-atom is (-E(1))...

Ground state energy of H-atom is `(-E_(1))`,t he velocity of photoelectrons emitted when photon of energy `E_(2)` strikes stationary `Li^(2+)` ion in ground state will be:

A

`v=sqrt((2(E_(p)-E))/(m))`

B

`v=sqrt((2(E_(p)+9E))/(m))`

C

`v=sqrt((2(E_(p)-9E))/(m))`

D

`v=sqrt((2(E_(p)-3E))/(m))`

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