The stopping potential V for photoelectric emission from a metal surface is plotted along y-axis and frequency v of incident light along X-axis. A straight line is obtained as shown. Planck's constant is given by
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a
Slope of the line
b
Product of slope on the line and charge on the electron
c
Product of intercept along y-axis and mass of the electron
d
Product of Slope and mass of electron
answer is B.
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Detailed Solution
Kmax=hv−hvo⇒eVo=hv−hvo⇒Vo=hev−hvoeComparing this equation with y =mx+c, we get slope m=he⇒h=m×e.
The stopping potential V for photoelectric emission from a metal surface is plotted along y-axis and frequency v of incident light along X-axis. A straight line is obtained as shown. Planck's constant is given by