PhysicsElementary modern physicsJAMB
Light of photon energy 5 eV falls on a metal of work function 2 eV. Find the maximum kinetic energy of the emitted electrons.
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Answer: B. 3 eV
Einstein's equation: KE(max) = hf − W = 5 − 2 = 3 eV.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.