WBJEE 2014 Physics Solved Paper

Question : 60 of 60

Marks: +1, -0

Half of the space between the plates of a parallel-plate capacitor is filled with a dielectric material of dielectricconstant K. The remaining half contains air as shown in the figure. The capacitor is now given a charge Q. Then

electric field in the dielectric-filled region is higher than that in the air-filled region
on the two halves of the bottom plate the charge densities are unequal
charge on the half of the top plate above the air-filled part is
Q
K+1
capacitance of the capacitor shown above is (1 + K)
C0
2
, C0 is the capacitance of the same capacitor withthe dielectric removed

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