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प्रश्न
State two factors upon which the rate of emission of thermions depends.
टीपा लिहा
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उत्तर
Factors on which the rate of emission of thermions depends:
1) Nature of the metal surface: Lower the work function of the metal, greater is the rate of emission of electrons.
2) The temperature of the surface: Higher the temperature of the surface, greater is the rate of emission of electrons.
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