A thin spherical conducting shell of radius R has a charge q. Another charge Q is placed at the centre of the shell. The electrostatic potential at a point P at a distance R/2 from the centre of the shell is

Options

A. `(2Q )/( 4 pi epsi_0 R )`
B. `(2Q )/(4 pi epsi_0) - ( 2 q )/( 4 pi epsi_0 R)`
C. `(2Q )/( 4 pi epsi_9 R ) +(q )/(4 pi epsi_0 R)`
D. `((q+Q))/( 4 pi epsi_0 )(2)/(R )`

Answer

C