W lien light of wavelength \lambda/2 falls on a metal plate, electrons are liberated with maximum kinetic energy of K. When light of wavelength \lambda/3 falls on the same plate, the maximum kinetic energy of electron is doubled. Threshold wavelength of metal is

AP and TS EAMCET Engineering Model Paper 20

Question : 117 of 160

Marks: +1, -0

W lien light of wavelength

falls on a metal plate, electrons are liberated with maximum kinetic energy of K. When light of wavelength

falls on the same plate, the maximum kinetic energy of electron is doubled. Threshold wavelength of metal is

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