Identify which of the following particles are emitted from a metal surface in the photoelectric effect?

Electrons

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Protons

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Neutrons

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Photons

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Atoms

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Solution

The correct option is A Electrons
Photoelectric effect is the phenomenon in which electrons are ejected from the metal surface when a light (photons) of frequency greater than the threshold frequency of the metal fall on the metal surface. The electrons thus emitted are known as photoelectrons.
Hence option A is correct.

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