Graphical variation of electric field due to a uniformly charged insulating solid sphere of radius , with distance from the center is represented by:
- A
(1) curves upward from the centre to a peak at , then falls off linearly.
- B
(2) is constant inside the sphere up to , then falls off as an inverse-square decay.
- C
(3) curves upward from the centre to , then stays constant outside.
- D
(4) rises linearly from the centre to a peak at , then falls off as an inverse-square decay.