Question

Coulomb force F versus 1/r² graphs for two pairs of point charges (q₁ and q₂) and (q₂ and q₃) are shown in the figure. The ratio of charges q₁/q₃ is :

Three small charged spheres X, Y and Z carrying charges + q, – q and + q respectively are placed equidistant from each other, as shown in the figure. The spheres Y and Z are held in place. Initially X is also held in place, but is otherwise free to move. When X is released, the path followed by it will be :

The Coulomb force (F) versus (1/r²) graphs for two pairs of point charges (q₁ and q₂) and (q₂ and q₃) are shown in figure. The charge q₂ is positive and has least magnitude. Then