Two charged parallel plate capacitors, each with separation between plates equal to $d$, are separated by a large distance $L >> d$. Then the force of interaction between them is proportional to
A$1/{d^2}$
B${d^2}/{L^4}$
C$1/{d^3}$
D${d^2}/{L^3}$
Medium
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B${d^2}/{L^4}$
b For large separation capacitor can be treated as dipole and dipole moment $\propto$ $\mathrm{d}$
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