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[" 23.The dipole moment of a system of c...

[" 23.The dipole moment of a system of charge tq distributed uniformiy on an arc of radius R subtending an angle "],[pi/2" at its centre another charge - "q" is placed is "],[[" (A) "(2sqrt(2)R)/(pi)," (B) "(sqrt(2)qR)/(r)," (C) "(qR)/(pi)," (D) "(2qR)/(pi)]]

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