Two short dipoles each of dipole moment p are placed at origin. The dipole moment of one dipole is along x-axis, while that of other is along y-axis. The electric field at a point (a, 0) is given by k=14πε0

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k2pa3

kpa3

zero

k5pa3

answer is D.

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Detailed Solution

for one dipole it is on the axial line E1=k2pa3 and for other it is on the equatorial line E2=kpa3 as they are perpendicular resultant is E=E12+E22

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