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In an experiment on photoelectric effect the frequency v of the incident light is plotted against the stopping potential V 0 . 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 .

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 .

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Grade:12th pass

1 Answers

Arun
25763 Points
2 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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