The stopping potential V_{0} (in volt) as a function of frequency (v) for a sodium emitter, is shown in the figure. The work function of sodium, from the data plotted in the figure, will be :

(Given : Planck's constant (h)=6.63\times10^{-34}Js, electron charge e=1.6\times10^{-19}C

  • Option 1)

    2.12eV

  • Option 2)

    1.66eV

  • Option 3)

    1.82eV

  • Option 4)

    1.95eV

 

Answers (1)

 

Experimental set up of photoelectric effect and work function -

The minimum energy of incident radiation required to eject electron from metal surface is work function

- wherein