Chemistry, asked by nsudipnath5111, 1 month ago

light of wavelength 4000 angstrom falls on the surface of a metal if the threshold wavelength required for emission of photoelectrons from the metal is 6600 Armstrong calculate the kinetic energy of photoelectrons emitted.​

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Answered by brainlygirl9387
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Work function is the minimum energy required by an electron to just escape from the metal surface as to overcome the restraining forces at the surface of metal. 

According to Einstein's photoelectric equation the work function of metal is given by :

my steps were no clear in fomula bar so i've attached them above

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