Q. 18. Define stopping potential in photoelectrie effect.
(Raj. Board Model Paper 2018)
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The stopping potential is defined as the potential necessary to stop any electron (or, in other words, to stop even the electron with the most kinetic energy) from reaching the other side. What happens in photoelectric effect is that, an incident radiation strikes the surface of the metal.
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The minimum negative potential given to the anode for which photoelectric current becomes zero.
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