In photoelectric effect an em-wave is incident on a metal surface and electrons are ejected from the surface. If the work function of the metal is 2.14 eV and stopping potential is 2 V, what is the wavelength of the em-wave? (Given hc 
where h is the Planck's constant and c is the speed of light in vaccum.)
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Verified by ExpertsThe correct answer is:
A
Using photoelectric equation.
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