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Sahay Sir > Question Answers > JEE Mains Physics 2002-2019 Solved Video Solutions > Chapter 17 - Dual Nature of Radiation > Sodium and copper have work functions 2.3 eV and 4.5 eV respectively. Then, the ratio of the wavelengths is nearest to

Sodium and copper have work functions 2.3 eV and 4.5 eV respectively. Then, the ratio of the wavelengths is nearest to

Sodium and copper have work functions 2.3 eV and 4.5 eV respectively. Then the ratio of the wavelengths is nearest to