Chemistry-
General
Easy
Question
The work function (
) of some metals is listed below. The number of metals which will show photoelectric effect when light of 300 nm wavelength falls on the metals is :
- 2
- 4
- 6
- 8
The correct answer is: 4
Energy of photon
For photoelectric effect to occur, energy of incident photons, must be greater than work functions of metal. Hence, only Li, Na, K and Mg have work functions less than 4.14 V.
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