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 electron charge)
OB×eineV
OBinvolt
OA in eV
TheslopeofthelineAB
A
OB×eineV
B
OBinvolt
C
OA in eV
D
TheslopeofthelineAB
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Solution
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The correct option is AOB×eineV
Using Einstein's equation ,
V0=heν−W0e
Comparing this equation with y=mx+c,
we get on (−V0) axis,
OB=W0e
hence, W0=OB×e eV.
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