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Questions  

A point Q lies on the perpendicular bisector of an electrical dipole of dipole moment p. If the distance of Q from the dipole is r (much larger than the size of the dipole), then electric field at Q is proportional to

a
p−1 and r−2
b
p and r−2
c
p2 and r−3
d
p and r−3

detailed solution

Correct option is D

Eequatorial =kpr3 i.e. E∝p and E∝r−3

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