Question bank/JEE Main/Physics

When photon of energy [IMAGE] strikes the surface
of a metal A, the ejected photoelectrons have maximum kinetic energy Ta
eV and de-Broglie wavelength[IMAGE]. The maximum kinetic
energy of photoelectrons liberated from another metal B by photon of
energy [IMAGE] is [IMAGE] If the de-Broglie
wavelength of these photoelectrons[IMAGE], then the work
function of metal B is

A2 eVB3 eVC1.5 eVD4 eV

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Relation between De-Broglie wavelength and K. E. is

Source: Grass-G / P-15 Physics paper 11 Nov.docx