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प्रश्न
State two characteristics of a good thermion emitter.
State the characteristics required of good thermion emitter
उत्तर
Characteristics of a good thermion emitter:
1) The work function of the substance should be low so that electrons may be emitted from it even when it is not heated to a high temperature.
2) The melting point of the substance should be high so that it may not melt when it is heated to the temperature required for thermionic emission.
संबंधित प्रश्न
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