A negatively charged rubber rod is brought close to but does not make contact with sphere X. Sphere Y is then brought close to X on the side opposite to the rubber rod. Y is allowed to touch X and then is removed some distance away. The rubber rod is then moved far away from X and Y. What are the f?

Step-by-step explanation:

When negatively charged rubber rod is brought close to sphere X it induces positive charge on sphere and simultaneously  negative charges is induced in the sphere opposite to the  side of rod .

At the same time Sphere Y is touched to the sphere X , this causes the negative charge to shift to the sphere Y with the help of negative charged rod which repels the electrons to sphere Y.

When rubber rod is moved far away from X and Y then final  charge possessed by X and Y spheres are

X:Positively charge

Y:Negatively charge