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State Three Factors on Which the Rate of Emission of Electrons from a Metal Surface Depends - Physics

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Question

State three factors on which the rate of emission of electrons from a metal surface depends

Solution 1

(i) The material of the surface,
(ii) The temperature of the surface,
(iii) The surface area of the surface.

Solution 2

A rate of emission of electrons from a metal surface depends on
(1) Nature of the metal surface: Lower the work function of the metal, greater is the rate of emission of electrons from its surface.
(2) The temperature of the surface: Higher the temperature of the surface, greater is the rate of emission of electrons from the surface.
(3) Surface area of the metal: Larger the surface area of the metal emitting electrons, greater is the rate of emission of electrons.

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APPEARS IN

 ICSE Solution for Class 10 Physics (2020 (Latest))
Chapter 11: Thermionic Emission and Radioactivity
Short Answers | Q: 10
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Solution State Three Factors on Which the Rate of Emission of Electrons from a Metal Surface Depends Concept: Radioactivity and Changes in the Nucleus.
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