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A capacitor has capacitance 5 mu F when ...

A capacitor has capacitance `5 mu F` when it's parallel plates are separated by air medium of thickness `d`.A slab of material of dielectric constant `1.5` having area equal to that of plates but thickness `(d)/(2)` is inserted between the plates.Capacitance of the capacitor in the presence of slab will be_____`muF`

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