PhysicsElementary modern physicsWAEC
Light of photon energy 3.5 eV falls on a metal whose work function is 2.0 eV. Find the maximum kinetic energy of the emitted electrons.
Show answer
Answer: C. 1.5 eV
KE(max) = hf − W = 3.5 − 2.0 = 1.5 eV.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.