The following graph shows the variation of st | vedclass

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(C) Concept: The stopping potential $V$ is related to the maximum kinetic energy $K_{\max}$ of the photoelectrons via Einstein's photoelectric effect

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$(C)$

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(C) Concept: The stopping potential $V$ is related to the maximum kinetic energy $K_{\max}$ of the photoelectrons via Einstein's photoelectric effect equation:$eV = K_{\max} = hv - hv_0$Therefore,$V = \left(\frac{h}{e}\right)v - \left(\frac{h}{e}\right)v_0$This equation is of the form $y = mx + c$,which represents a straight line.Here,the slope $m = \frac{h}{e}$ is positive,and the intercept on the $V$-axis is $-\left(\frac{h}{e}\right)v_0$.At $v = v_0$,the stopping potential $V = 0$.Thus,the graph is a straight line starting from $v = v_0$ on the frequency axis and increasing linearly with frequency.Graph $(A)$ correctly represents this relationship.

The following graph shows the variation of stopping potential with the frequency of incident radiation $(v)$ for a given metal. The correct variation is shown in graph [$v_0 =$ threshold frequency].

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