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Two identical charged spheres are suspended strings of equal lengths. The strings make an angle of 300 with each other. When suspended in a liquid of density of 0.8gcm3, the angle remains the same! if te density of the material of the sphere is 1gcm3 , the dielectric cons ant of the liquid is

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Solution


tanθ=Fρvg=(F/εr)(ρσ)vg

ρρσ=εr

110.8=εr
5=εr

εr=5
dielectric current =5


1201200_1235122_ans_8a9cc3cfe2254befa94527c5f854f609.png

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