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A light having wavelength 300 nm falls on a metal surface work function of metal is 2.54 eV. What is stopping potential?(a) 1.4 V (b) 2.59 V (c) 1.60 V (d) 1.29 V |
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Answer» (a) 1.4 V eV0 = hu – W0 = 2eV – 0.6 eV = 1.4 eV ∴ V0 = \(\frac{1.4eV}{e}\) = 1.4eV |
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