If light with photon energy 2eV is incident suitably on the surface of a metal...
PHYSICS
JAMB 1994
If light with photon energy 2eV is incident suitably on the surface of a metal with work function 3eV, then
- A. no electron will be emitted
- B. the few electrons emitted will have a maximum kinetic energy of 1eV
- C. the few electrons emitted will have a maximum kinetic energy of 3eV
- D. many electrons will be emitted
Correct Answer: A. no electron will be emitted
Explanation
An electron can only be emitted if photon energy is equal or greater than work function of the plate
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