In photo-electric effect, the slope of straight line graph between stopping potential (V0) and frequency of incident light (v) gives

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charge on electron

work-function of emitter

Planck's constant

ratio of Planck's constant to charge on electron

answer is D.

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Detailed Solution

hv=hv0+eV0 or V0=hev′−hev0 Comparing it with y=mx+C, we have m= h le

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