The following graph represents the variation of photocurrent with...

The given figure can be shown as

From figure, we can see that the stopping potential $\left(V_{0}\right)$ is same for curve 1 and 2. But for curve 3 , it is greater than that for land 2 . As, we know that, $e V_{0}=E_{\max }=h \gamma-\phi_{0}$ where, $\phi_{0}$ is the work function. Since, $V_{0}$ is same for 1 and 2, so from above equation, we have $r_{1}=r_{2}$ Thus, for 1,2 and 3 $\gamma_{1}=\gamma_{2} \neq \gamma_{3}$ Also, the saturation current of curve 2 is greater than of curve 1 . But for curve 2 and 3 it is equal, so, $I_{1} \neq I_{2}=I_{3}$