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Standard XII

Physics

Electric Field Due to a Dipole

A cavity of r...

Question

A cavity of radius $r$ is present inside a fixed solid dielectric sphere of radius $R$ , having a volume charge density of $ρ$ . The distance between the centres of the sphere and the cavity is $a$ . An electron is released inside the cavity at an angle $θ = 45^{o}$ as shown. The electron (of mass $m$ and charge $- e$ ) will take ${(\frac{P \sqrt{2} m r ε_{0}}{e a ρ})}^{\frac{1}{2}}$ time to touch the sphere again. Neglect gravity. Find the value of $P$ :

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Solution

The correct option is C 6
${(\frac{6 \sqrt{2} r m ε_{0}}{e a ρ})}^{\frac{1}{2}}$ will take time to touch the sphere again. Neglect gravity. the value of $P$ is 6

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The correct option is C 6(6√2rmε0eaρ)12 will take time to touch the sphere again. Neglect gravity. the value of P is 6

The correct option is C 6
${(\frac{6 \sqrt{2} r m ε_{0}}{e a ρ})}^{\frac{1}{2}}$ will take time to touch the sphere again. Neglect gravity. the value of $P$ is 6