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(a) Find the maximum wavelength lambda(0...

(a) Find the maximum wavelength `lambda_(0)` of light which can ionize a hydrogen atom in its ground (b) light of wavelength `lambda_(0)` is inclined on a hydrogen atom which is in its first excited state find the kinetic energy of the electron coming out

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(a) `(hc)/(lambda_0)=13.6eV`
(b) `lambda_(0)=Å`
K.E. `=10.2eV`.
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