Physics · PYQ NEET UG 2023

If \( \oint_S \vec{E} \cdot d\vec{S} = 0 \) over a surface, then :

1. A
   all the charges must necessarily be inside the surface.
2. B
   the magnitude of electric field on the surface is constant.
3. C
   the number of flux lines entering the surface must be equal to the number of flux lines leaving it.
4. D
   the electric field inside the surface is necessarily uniform.