Modern Physics 2 Question 20

19. The maximum kinetic energy of photoelectrons emitted from a surface when photons of energy $6 eV$ fall on it is $4 eV$. The stopping potential in volt is

(1997, 1M)

(a) 2

(b) 4

(c) 6

(d) 10

Objective Questions II (One or more correct option)

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Solution:

  1. Stopping potential is the negative potential applied to stop the electrons having maximum kinetic energy. Therefore, stopping potential will be $4 V$.


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