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  • The stoping potential for the photoelectrons emitted from metal surface of work function is <img alt=

The stoping potential for the photoelectrons emitted from metal surface of work function1.7 \ eV is 10.4 V.. Then -

Option: 1

wavelength of incident radiation is 222 \AA


Option: 2

maximum K.E. of emitted photoelectrons is 10.4 eV


Option: 3

if this incident wavelength is incident on hydrogen atom then energy level is n = 5


Option: 4

none of these 


Answers (1)

best_answer

\begin{aligned} & \mathrm{hc} / \lambda=\mathrm{K} . \mathrm{E}+\phi \\ & \mathrm{K} . \mathrm{E} .=\mathrm{hc} / \lambda-\phi=\mathrm{eV}_0 \end{aligned}

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