The distance between the two charges +q and -q of a dipole is r. On the axial line at a distance d from the centre of dipole, the Electric intensity is proportional to
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a
qd2
b
qrd2
c
qd3
d
qrd3
answer is D.
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Detailed Solution
Field along the axis of the dipoleE=14πε0⋅2pd3=14πε0⋅2(q×r)d3; ∴ E∝qrd3