Two non-conducting solid spheres of radii \( R \) and \( 2 R \), having uniform volume charge de...

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Two non-conducting solid spheres of radii \( R \) and \( 2 R \), having uniform volume charge densities \( \rho_{1} \) and \( \rho_{2} \) respectively, touch each other. The net electric field at a distance \( 2 R \) from the centre of the smaller
\( P \) sphere, along the line joining the centres of the spheres, is zero. The ratio \( \frac{\rho_{1}}{\rho_{2}} \) can be
\( \mathrm{W} \)
(A) \( -4 \)
(B) \( -\frac{32}{25} \)
(C) \( \frac{32}{25} \)
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