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Physical Properties of Metals

The character...

Question

The characteristics which a material should possess to act as a good thermion emitter is ________.

A

High work function and high melting point

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B

High work function and low melting point

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C

Low work function and high melting point

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D

Low work function and low melting point

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Solution

The correct option is C Low work function and high melting point
The characteristics which a material should posses to act as a good thermion emitter is :
Low work function.
High melting point.

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