1)A parallel plate capacitor has square plates of edge length 2a.2dielectrics fill the space between the plates .The dielectric with dielectric constant k₂has parabolic section while the remaining space is occupied with the other dielectric k₁.Find its equivalent capacitance.Assume k₂>k_1.Eqn of parabola x²=2ay

2)The plates of a parallel plate capacitor charged to a potential are alternately earthed.Will the capacitor be discharged?Why/Why not?Explain.

2) it will not discharge as there is no driving potential to take electrons from capacitor to earth.

1) isn't there distance b/w plates given?? I got the method but it needs distance b/w two plates. plz confirm.