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Question

The factors on which the rate of emission depends are


  1. i) the material of the surface ii) colour of the surface iii) area of the surface

  2. i) the material of the surface ii) colour of the surface iii) volume of the surface

  3. i) the roughness of the surface ii) temperature of the surface iii) area of the surface

  4. i) the material of the surface ii) temperature of the surface iii) area of the surface

  5. i) the roughness of the surface ii) temperature of the surface iii) volume of the surface


Solution

The correct option is D

i) the material of the surface ii) temperature of the surface iii) area of the surface


The number of electrons emitted per second i.e. the rate of emission depends upon

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