What happens in the process of thermionic emission?

Complete molecules are emitted from the surface of a hot liquid

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Single atoms are emitted from the surface of a hot liquid

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Electrons are emitted from the surface of a hot metal

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Protons are emitted from the surface of a hot metal

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Solution

The correct option is B Electrons are emitted from the surface of a hot metal
In thermionic emmsion, electron take heat and are emitted from the surface of the hot metal.

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