Q.
In photo electric effect, the slope of the straight line graph between stopping potential and frequency of the incident light gives the ratio of Planck's constant to
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Dual Nature of Radiation and Matter
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Solution:
hv=hv0+K⋅E
at stopping potential K.E=eV ⇒hv=hv0+eV V=eh(v−v0)
The slope of graph b/w stopping potential and frequency is eh, where e is charge of electron.