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Radiation emitted due to transistion of an electron from n = 2 to n = 1 in Hydrogen atom is made to fall on a metal surface with work function 1.2eV. The maximum velocity of photo electrons emitted is nearly equal to

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Radiation emitted due to transistion of an electron from n = 2 to n = 1 in Hydrogen atom is made to fall on a metal surface with work function 1.2eV. The maximum velocity of photo electrons emitted is nearly equal to



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