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Hertz's Observations

The minimum e...

Question

The minimum energy required for the electron emission from the metal surface can be supplied to the free electrons by which of the following physical processes?

A

Thermionic emission

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B

Field emission

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C

Photoelectric emission

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D

All of these

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Solution

The correct option is D All of these
For electron emission energy is required. This energy can be supplied by Thermionic emission, field emission, photoelectric emission.
Answer all of these

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