When a metal surface is illuminated by light of wavelengths 400 nm and 250 nm, the maximum velocities of the photoelectrons ejected are v and 2v respectively. The work function of the metal is - (h = Planck's constant, c = velocity %3D of light in airl

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When a metal surface is illuminated by light of wavelengths
400 nm and 250 nm, the maximum velocities of the
photoelectrons ejected are v and 2v respectively. The work
function of the metal is - (h = Planck's constant, c = velocity
%3D
of light in air
Transcribed Image Text:When a metal surface is illuminated by light of wavelengths 400 nm and 250 nm, the maximum velocities of the photoelectrons ejected are v and 2v respectively. The work function of the metal is - (h = Planck's constant, c = velocity %3D of light in air
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