Physics - Electrostatics Question with Solution | TestHub

A positive point charge of $10^{-8}\mathrm{C}$ is kept at a distance of 20 cm from the center of a neutral conducting sphere of radius 5 cm. The sphere is then grounded and the charge on the sphere is measured. The grounding is then removed and subsequently the point charge is moved by a distance of 20 cm further away from the center of the sphere along the radial direction. Taking $\frac{1}{4\pi {ϵ}_0}=9\times 10^9{\mathrm{Nm}}^2/{\mathrm{C}}^2$ (where ${ϵ}_0$ is the permittivity of free space), Which of the following statements is/are correct?