# The charge surface distribution of a conductor with a non centered charge

A point like charge Q is placed inside the cavity of a spherical conductor of an internal radius R1 and external radius R2 initially neutral(uncharged) (see the figure), the question is how is the charge distribution of the induced charge Q1 and Q2?

the solution in the book says: in order to determine the distribution of the charge sigma2 of Q2 on the external surface , we can observe that according to the electrostatic shielding this distribution is independent of the charge distribution sigma1 of the charge Q1 on the surface R1 and of the position of the point like charge Q , but at the same time the distribution of the induced charge Q1 will not be uniform unless the point charge Q is placed in the center of the sphere.

Can someone explain me what does this mean?

Many thanks in advance!!