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light from dischage tube containing hydrogen atom fall the serface of piece sodium kinetic energy of photoelectrons emmited sodium0.73eV.work func sodiun 1.82eV.find a)energy of photo causing the photo electronic emmission,b)quantum nubtwo lebel involvedin emmission of these phons,c)change in angular momentumof electronhydrogen atom in above tnansion,d)recoil speed emmiting atom assuming it to be at rest brfore transition.(ionization energy of hydrogen 13.6eVand mass of the hydrogen atom1.67

Kevin Nash , 10 Years ago
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Saurabh Koranglekar

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