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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 28 - Dual Nature of Radiation and Matter > The work function of a metallic surface is 5.01eV. The photo – electrons are emitted when light of wavelength 2000 Å falls on it . The potential difference applied to stop the fastest photo – electrons is [h=4.14×10^−15 eVsec]

The work function of a metallic surface is 5.01eV. The photo – electrons are emitted when light of wavelength 2000 Å falls on it . The potential difference applied to stop the fastest photo – electrons is [h=4.14×10^−15 eVsec]

The work function of metal is W and λ is the wavelength of the incident radiation. There is no emission of photoelectrons when