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Grade 12th passModern Physics

In an experiment on photoelectric effect the frequency v of the incident light is plotted against the stopping potential V0. The work function of the photoelectric surface is given by ( e is electronic charge)
1) OB* e in eV 2) OB in volt 3) OA in eV
4) The slope of the line AB
Correct ans is 1st option
Please explain the above .

Question image for In an experiment on photoelectric effect the freq
Profile image of Shivi .
7 Years agoGrade 12th pass
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1 Answer

Profile image of Arun

Arun

7 Years ago

Using

Einstein’s equation, Vo = (h/e) v – Wo /e

now comaring this by

y = mx + c

intercept = Wo/e

 

OB = Wo/e

hence

Wo = OB * e

 

Hope it helps

 

Regards

Arun (askIITians forum expert)

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