Q 1206591478.     A parallel plate capacitor consists of two plates of area `A` and separation `d. A` slab of thickness `t` and dielectric constant `k` is inserted between the plates with its faces parallel to the plates and having the same surfaces, given `k = 2`.

For what value of `t/d` will the capacitance of the system be `(3/2)` times that of the condenser with air filling the full space

A

`3/2`

B

`2/3`

C

`1`

D

`4/3`

HINT

`C_(eq) = 3/2 C_(air)` `C_(eq)`= Capacitance after putting a slab between plates.

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