Ejection of the photoelectron from ...
Question
Ejection of the photoelectron from metal in the photoelectric effect experiment can by stopped by applying 0.5V when the radiation of 250nm is used. The work functio
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Ejection of the photoelectron from metal in the photoelectric effect experiment can by stopped by applying ( 0.5 mathrm{V} ) when the radiation of ( 250 mathrm{nm} ) is used. The work function of the metal is:
(1) 4 ev
( begin{array}{ll}text { (2) } 5.5 mathrm{eV} & text { (3) } 4.5 mathrm{eV} text {} text {}end{array} )
(4). 5.eV

JEE/Engineering Exams
Chemistry
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Ejection of the photoelectron from metal in the photoelectric effect experiment can by stopped by applying 0.5V when the radiation of 250nm is used. The work function of the metal is
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( begin{aligned} phi &=frac{h C}{7} &=frac{6 cdot 63 times 10^{-3} times 3 times 10^{8}}{250 times 10-9} &=frac{0.076 times 10^{-17}}{1.6 times 10^{19}} & approx 4.41 mathrm{eV} end{aligned} )

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