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[" (40) An electric dipole of moment "ve...

[" (40) An electric dipole of moment "vec P" is placed normal to the lines of force of lectric intensity "vec E" then the work done in "],[" deflecting it through an angle of "180^(@)" is "],[[" (A) "PE," (B) "-2PE," (C) Zero "," (D) "+2PE]]

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