Electric charge is transferred to an irregular metallic disk as shown in figure. If $\sigma_1, \sigma_2,…

Electric charge is transferred to an irregular metallic disk as shown in figure. If $\sigma_1, \sigma_2, \sigma_3$ and $\sigma_4$ are charge densities at given points then, choose the correct answer from the options given below:

  1. A, B and C Only
  2. A and C Only
  3. D and E Only
  4. B and C Only

Solution

$\begin{aligned} & \sigma \propto \frac{1}{\mathrm{ROC}} \\ & (\mathrm{ROC})_1 \lt (\mathrm{ROC})_3 \lt (\mathrm{ROC})_2=(\mathrm{ROC})_4 \\ & \sigma_1 \gt \sigma_3 \gt \sigma_2=\sigma_4\end{aligned}$

Asked in: JEE Main 2025 (08 Apr Shift 2)

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