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Physics

Photoelectric Effect

प्रकाशवैद्युत प्रभाव

In Class 12 Physics, the Photoelectric Effect (प्रकाशवैद्युत प्रभाव) explains how light can eject electrons from a metal surface when its frequency exceeds the threshold frequency. Students explore the roles of intensity, frequency, work function, and stopping potential, and use Einstein’s photoelectric equation to relate photon energy to electron emission and maximum kinetic energy. As part of Chapter 11: Dual Nature of Radiation and Matter, the topic shows why light exhibits particle-like behavior and supports the idea of quantized energy.

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