The maximum kinetic energy of photoelectrons emitted from a metalic surface is 30 eV when monochromatic radiation of wavelength falls on it. When the same surface is illuminated with light of wavelength 2lambdathe maximum kinetic energy photo electrons is observed to be 10 eV Calculate the wavelength lambda and determine the maximum wavelength of incident radiation for which photoelectrons can be emitted by this surface, (h = 6.62 xx 10^(-34) JS =4.14 xx 10^(-15) eV-s. c = 3 xx 10^(8) m//s)

The maximum kinetic energy of photoelectrons emitted from a metalic su

1.	The maximum kinetic energy of photoelectrons emitted from a metalic surface is 30 eV when monochromatic radiation of wavelength falls on it. When the same surface is illuminated with light of wavelength 2lambdathe maximum kinetic energy photo electrons is observed to be 10 eV Calculate the wavelength lambda and determine the maximum wavelength of incident radiation for which photoelectrons can be emitted by this surface, (h = 6.62 xx 10^(-34) JS =4.14 xx 10^(-15) eV-s. c = 3 xx 10^(8) m//s)
Answer» ANSWER :310.5 A 1242 A

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