Light of wavelength λ and photon energy 3eV falling on a metal surface produces photo electrons of maximum velocity V. If the wavelength of the incident light is changed to 34λ and the maximum velocity of the electron is doubled, the work function of the metal is nearly
Light of wavelength λ and photon energy 3eV falling on a metal surface produces photo electrons of maximum velocity V. If the wavelength of the incident light is changed to 34λ and the maximum velocity of the electron is doubled, the work function of the metal is nearly
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Q2
A photon of energy 2.5 eV and wavelength ′λ′ falls on a metal surface and the ejected electrons have maximum velocity ′v′. If the ′λ′ of the incident light is decreased by 20%, the maximum velocity of the emitted electrons is doubled. The work function of the metal is :
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Q3
Light of wavelength 1824∘A, incident on the surface of a metal, produces photo-electrons with maximum energy 5.3 eV. When light of wavelength 1216∘A is used, the maximum energy of photoelectrons is 8.7 eV. The work function of the metal surface is
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Q4
Photons of energy 2.0 eV fall on a metal plate and release photo electrons with a maximum velocity V. By decreasing λ by 25% the maximum velocity of photo electrons is doubled. The work function of the metal of the material plate in eV is nearly :
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Q5
Light of wavelength 1824∘A, incident on the surface of a metal, produces photo-electrons with maximum energy 5.3 eV. When light of wavelength 1216∘A is used, the maximum energy of photoelectrons is 8.7 eV. The work function of the metal surface is