Suppose photoelectric experiment is done separately with these metals with light of wavelength 450 nm. The maximum magnitude of stopping potential amongst all the metals is ______________.

2.75 volt

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4.5 volt

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0.45 volt

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0.25 volt

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Solution

The correct option is C 0.45 volt
The maximum magnitude of stopping potential will be for metal of least work function.
$∴$ required stopping potential is
$V_{s} = \frac{h v - ϕ_{0}}{e} = 0.45 v o l t$ .

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