A particle A having charge q is placed at a distance d from another particle B having an equal charge q an dielectric slab of thickness t is placed midway between the two.Electrostatic force on A due to B

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decreases

increases

remains constant

may increase or decrease depending upon the magnitudes of the charges

answer is C.

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Detailed Solution

Induced surface charge on the slab is zero . So force on A due to B remains unchanged.

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