A spherical capacitor has an inner sphere of radius $12\;cm$ and an outer sphere of radius $13\; cm$.The outer sphere is earthed and the inner sphere is given a charge of $2.5 \mu C$. The space between the concentric spheres is filled with a liquid of dielectric constant 32. Choose the right option/s. (A) the capacitance of the capacitor is $5.5 \times 10^{–9} F$ (B) the potential of the inner sphere is $4.5 \times 10^{2}$ volt (C) the capacitance of the capacitor is $7.5 × 10^{–9} F$ (D) the potential of the inner isolated sphere is $1.33 \times 10^{–11}$ volt

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