Q)
(chatquestion)...A photon emitted during the
de-excitation of electron from a state n
to the first excited state in a hydrogen
atom, irradiates a metallic cathode of
work function 2eV, in a photocell, with a
stopping potential of 0.55 V. Obtain the
value of the quantum number of the
state n.All India 2019
1 Answer
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