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A photo electric surface has work functi...

A photo electric surface has work function 2eV. What is the maximum kinetic energy of the emitted photoelectrons ejected by light by wavelength `3000overset(@)A`
Given `h=6.6xx10^(-34)J-S,e=1.6xx10^(-19)C`.
`m_e=9g0^(-31)kg,C = 3xx10^8m//sec`

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