In photoelectric effect, the stopping potential is the least value of negative potential to be applied in a photoelectric tube for which photoelectric current becomes zero.
Class 12 Physics
Chapter 11 Dual Nature of Radiation and Matter Session 2024-2025.
Define the term ‘stopping potential’ in relation to photoelectric effect.
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In the photoelectric effect, stopping potential is the minimum negative potential applied to the collector plate that completely stops the most energetic photoelectrons from reaching it, thereby reducing the photocurrent to zero. It represents the maximum kinetic energy of photoelectrons.
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