The maximum kinetic energy Kmaxof photo-electrons emitted in a photoelectric cell is measured using lights of various frequencies v,. The slope of the graph is equal to
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a
charge on an electron
b
work-function of emitter
c
velocity of photon
d
Planck's constant
answer is D.
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Detailed Solution
hv=W0+(K.E.) or K.E. =Kmax=hv−W0 comparing with y = m x +C we find that m =h (planck's constan)