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NEET 2011 Physics question

PhysicsDual Nature of Matter and RadiationNEET 2011

In photoelectric emission process from a metal of work function 1.8 eV, the kinetic energy of most energetic electrons is 0.5 eV. The corresponding stopping potential is :

Answer: (3)

Solution

The stopping potential is the retarding potential that just stops the most energetic photoelectrons: $ = = 0.5\

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Question ID VK-090970