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Question

An electric dipole is formed due to two particles fixed at the ends of a light rigid rod od length I. The mass of each particle is m and charges are -q and +q The system is suspended by a torsionless thread in an electric filed of intensity E such that the dipole axis is parallel to the filed if it is slightly displaced, the period of angular motion is

A
12π2qeml
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B
2πmlqE
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C
2πml2qE
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D
12πml4qE
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Solution

The correct option is C 2πml2qE
1958412_1491145_ans_8b577b31b8f340838982a4d654cb5f54.jpg

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