The stopping potential (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 constantelectron charge ) |
[JEE Main Held on 12-4-2019 Morning] |
A) 1.95 eV
B) 1.82 eV
C) 1.66 eV
D) 2.12 eV
Correct Answer: C
Solution :
[c] |
is zero for |
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