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  4. The following graph represents the variation of photo current with anode potential for a metal surface. Here I1, I2 and I3 represents intensities and γ1, γ2, γ3 represent frequency for curves 1, 2 and 3 respectively, then

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Q. The following graph represents the variation of photo current with anode potential for a metal surface. Here $I_1$, $I_2$ and $I_3$ represents intensities and $\gamma_1$, $\gamma_2$, $\gamma_3$ represent frequency for curves $1, 2$ and $3$ respectively, thenPhysics Question Image

KCETKCET 2020Dual Nature of Radiation and Matter

Solution:

Here in the graph we can see that, the Stopping potential is same for $1$ and $2$ . So, frequencies will be same i.e. $\gamma _{1}= \gamma _{2}$ and, currents are different. So, intensity are different i.e. $I_{1} \neq I_{2}$.