The work function of a metal is 2ev .lf the radiation of wavelength 3000A is incident on it the maximum kinetic energy of the emitted photoelectron is?

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The work function of a metal is 2ev .lf the radiation of wavelength 3000A is incident on it the maximum kinetic energy of the emitted photoelectron is?

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The work function of a metal is 2ev .lf the radiation of wavelength 30...

3.4 × 10^-9 J

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The stopping potential for the photo electrons emitted from a metal surface of work function 1.7eV is 10.4 V. Identify the energy levels corresponding to the transitions in hydrogen atom which will result in emission of wavelength equal to that of incident radiation for the above photoelectric effect

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According to wave theory of light, the light of any frequency can emit electrons from metallic surface provided the intensity of light be sufficient to provide necessary energy for emission of electrons, but according to experimental observations, the light of frequency less than threshold frequency can not emit electrons; whatever be the intensity of incident light. Einstein also proposed that electromagnetic radiation is quantised.If photoelectrons are ejected from a surface when light of wavelength λ1 = 550 nm is incident on it. The stopping potential for such electrons is Vs =0.19 . Suppose the radiation of wavelength λ2 = 190 nm is incident on the surface.Q. Photoelectric effect supports quantum nature of light because(i) there is a minimum frequency of light below which no photoelectrons are emitted.(ii) the maximum K.E. of photoelectric depends only on the frequency of light and not on its intensity.(iii) even when the metal surface is faintly illuminated, the photo electrons leave the surface immediately.(iv) electric charge of the photoelectrons is quantized.

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According to wave theory of light, the light of any frequency can emit electrons from metallic surface provided the intensity of light be sufficient to provide necessary energy for emission of electrons, but according to experimental observations, the light of frequency less than threshold frequency can not emit electrons; whatever be the intensity of incident light. Einstein also proposed that electromagnetic radiation is quantised.If photoelectrons are ejected from a surface when light of wavelength λ1 = 550 nm is incident on it. The stopping potential for such electrons is Vs =0.19 . Suppose the radiation of wavelength λ2 = 190 nm is incident on the surface.Q. Calculate the work function of the surface.

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When photons of energy 4.25eV strike the surface of a metal A, the ejected photoelectrons have maximum kinetic energy, TA (expressed in eV) and de broglie wavelength,λA, The maximum kinetic energy of photoelectrons liberated from anothermetal B by photons of energy 4.70V is TB = TA - 1.50 eV. If the de Broglie wavelength of these photoelectrons is =,λB = 2λAthen which is not correct?

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When photons of energy 4.25 eV strike the surface of a metal A, the ejected photoelectrons have maximum kinetic energy, TA (expressed in eV) and de Broglie wavelength λA, The maximum kinetic energy of photoelectrons liberated from another metal B by photons of energy 4.70 V is TB = TA –1.50eV. If the de Broglie wavelength of these photoelectrons is λB = 2λA, then which is not correct?

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The work function of a metal is 2ev .lf the radiation of wavelength 3000A is incident on it the maximum kinetic energy of the emitted photoelectron is?

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