Two charges are at a distance `d` apart. If a copper plate (conducting medium) of thickness `d//2` is placed between them , the effictive force will be

Two charges are at a distance d apart. If a copper plate of thickness d/2 is placed between them, if effective force will be,

The distance between the plates of a parallel plate condenser is d. If a copper plate of same area but thickness d/2 is placed between the plates then the new capacitance will become -

Two charges are placed in vacuum at a distance d apart. The force between them is F. if a medium of dielectric constant 2 is introduced between them, the force will now be

Two charges are placed a certain distance apart in air. If a brass plate is introduced between them, the force between them will

The distance between the plates fo a parallel plate capacitor is d. A metal plate of thickness d//2 is placed between the plates, what will be the new capacity ?