In photoelectric effect, the stopping potential ( V_0) v / s frequency (ν) curve is plotted. ( h is the Planck's constant and φ_0 is work function of…

In photoelectric effect, the stopping potential $\displaystyle \left(\mathrm{V}_0\right) \mathrm{v} / \mathrm{s}$ frequency $\displaystyle (\nu)$ curve is plotted. ( h is the Planck's constant and $\displaystyle \phi_0$ is work function of metal )

$\displaystyle \mathrm{V}_0 \mathrm{v} / \mathrm{s}\ \nu$ is linear.

The slope of $\displaystyle \mathrm{V}_0 \mathrm{v} / \mathrm{s}\ \nu$ curve $\displaystyle =\frac{\phi_0}{\mathrm{~h}}$

$\displaystyle \mathrm{h}$ constant is related to the slope of $\displaystyle \mathrm{V}_0 \mathrm{v} / \mathrm{s}\ \nu$ line.

The value of electric charge of electron is not required to determine $\displaystyle h$ using the $\displaystyle \mathrm{V}_0 \mathrm{v} / \mathrm{s}\ \nu$ curve.

The work function can be estimated without knowing the value of h.

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