1. The problem statement, all variables and given/known data In non uniform spherical shell of mass 'm' and radius R (here E is gravitational intensity) which of the following are wrong; (A) E = 0 (r<R) (B) ∫ E.dS = 0 on any closed surface inside the shell (C) E can not be zero at any point inside the shell (D) Gravitational potential is zero at any point inside the shell. 2. The attempt at a solution I think it should be A,C,D. A friend say C,D only. What do you say. Please help..