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JEE Main 20258 AprilEvening Shift
Exam
JEE Main
Year
2025
Date
8 April
Shift
Evening Shift
Subject
Physics
Chapter
Electrostatics

JEE Main 2025 · 8 April · Evening Shift · Physics · Electrostatics

Electric charge is transferred to an irregular metallic disk as...

Electric charge is transferred to an irregular metallic disk as shown in figure. If σ1,σ2,σ3\sigma_1, \sigma_2, \sigma_3 and σ4\sigma_4 are charge densities at given points then, choose the correct answer from the options given below:
Electric charge is transferred to an irregular metallic disk as shown in figure. If σ_1, σ_2, σ_3 and σ_4 are charge
Electric charge is transferred to an irregular metallic disk as shown in figure. If σ_1, σ_2, σ_3 and σ_4 are charge

Options

  1. AA, B and C Only
  2. BA and C Only
  3. CD and E Only
  4. DB and C Only

Correct answer

A. A, B and C Only

Step-by-step solution

σ∝1ROC(ROC)1<(ROC)3<(ROC)2=(ROC)4σ1>σ3>σ2=σ4\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}
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