A photon of energy 8 eV is incident on a...

A photon of energy `8 eV` is incident on a metal surface of threshold frequency `1.6 xx 10^(15) Hz`, then the maximum kinetic energy of photoelectrons emitted is `( h = 6.6 xx 10^(-34) Js)`

` 1.4 eV `

`0.8 eV `

`4.2 eV `

`2.8 eV `

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