Question

The factors on which the rate of emission depends are

• A. i) the roughness of the surface ii) temperature of the surface iii) area of the surface
• B. i) the material of the surface ii) colour of the surface iii) area of the surface
• C. i) the material of the surface ii) colour of the surface iii) volume of the surface
• D. i) the material of the surface ii) temperature of the surface iii) area of the surface
• E. i) the roughness of the surface ii) temperature of the surface iii) volume of the surface

Answer 1

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