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If the wavelength of incident light changes from 300 nm to 400 m, then find the change in stopping potential. If the work function

If the wavelength of incident light changes from 300 nm to 400 m, then find the change in stopping potential. If the work function of metal = 2.5 eV ? (1) 1.03 ev (2) 2.10 ev (3) 1.85 ev (4) 2.03 eV

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