Question

The capacitance of a capacitor between` 4//3` times its original value if a dielectric slab of thickness `t=d//2` is inserted between the plates (d is the separation between the plates). What is the dielectric consant of the slab?

Answer 1

Correct Answer - 2
(6) `(epsilon_(0)A)/(d-d/2+d/(2k))=4/3(epsilon_(0)A)/d)`. Solve to get `k=2`.