Q. An ionized gas contains both positive and negative ions. If it is subjected simultaneously to an electric field along the +x direction and a magnetic field along the +z direction, then
(a)positive ions deflect towards +y direction and negative ions towards -y direction
(b)all ions deflect towards +y direction
(c)all ions deflect towards -y direction
(d)positive ions deflect towards -y direction and negative ions towards +y direction
Ans: (c)