Light with photon energy 7 eV shines on a metal with a work function of 3 eV. What is the maximum kinetic energy of the photoelectrons?
Answer and explanation
Correct answer: B. 4 eV
- Step 1: Ek max = hf - work function.
- Step 2: = 7 - 3 = 4 eV.
Answer
4 eV.
Why not the others: 10 eV, 7 eV and 3 eV do not fit.
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