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What is work function #shorts #jee #neet

The work function is the minimum amount of energy needed to remove an electron from the surface of a material, typically a metal. It’s measured in electron volts (eV) and plays a crucial role in the photoelectric effect, where light energy causes electrons to be emitted. If the energy of incoming photons is equal to or greater than the work function, electrons are released. This concept is key in semiconductors, solar cells, and electronic devices. Different materials have different work functions, affecting how easily they emit electrons. Understanding work function helps in designing more efficient electronic and optical systems.

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