A parallel plate capacitor is located horizontally, so that one of its plates is submerged into liquid while the other is over the surface. The dielectric constant of the liquid is equal to `k`. Its density is equal to `rho`. To what height will the level of the liquid in the capacitor rise after its plates gets a charge of surface density `sigma` ?
.

Options

A. `h=((k^2-1)sigma^(2))/(2 epsilon_(0) k^2 rho g)`
B. `h=((k-1)sigma^(2))/(epsilon_(0) k rho g)`
C. `h=(2(k-1)sigma^(2))/(epsilon_(0) k rho g)`
D. `h=0`

Answer

A