Radiation corresponding to the transition \( \mathrm{n}=4 \) to \( \mathrm{n}=2 \) in hydrogen a....

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Radiation corresponding to the transition \( \mathrm{n}=4 \) to
\( \mathrm{P} \)
\( \mathrm{n}=2 \) in hydrogen atoms falls on a certain metal
W
(work function \( =2.5 \mathrm{eV} \) ). The maximum kinetic energy of the photo-electrons will be :
(A) \( 0.55 \mathrm{eV} \)
(B) \( 2.55 \mathrm{eV} \)
(C) \( 4.45 \mathrm{eV} \)
(D) \( 0.05 \mathrm{eV} \)


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