A metallic solid sphere is placed in a uniform electric field, Fig. Which path is followed by the lines of force ?

Explanation

When a solid conducting sphere is placed in a uniform electric field `vec(E)` , free electrons of the conductor move in a direction opposite to `vec(E)` .
This results in the development of some negative charge on the left part of the sphere and an equal positive charge on right part of the sphere.
Electric lines of force end normally on left part, and start normally from the right part. Therefore, path 4 is correct Fig.