As stopping potential Vo = 1.5 V, hence maximum kinetic energy of the photoelectrons emitted Kmax = 1.5 eV.
Class 12 Physics
Chapter 11 Dual Nature of Radiation and Matter Session 2024-2025.
The stopping potential in an experiment on photoelectric effect is 1.5 V. What is the maximum kinetic energy of the photoelectrons emitted?
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The maximum kinetic energy of photoelectrons is given by K.E. = e × V, where e is the electron charge (1.6 × 10⁻¹⁹ C) and V is the stopping potential. Thus, K.E. = 1.6 × 10⁻¹⁹ × 1.5 = 2.4 × 10⁻¹⁹ J.
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