The gravitational force used per unit of mass at a small point is called gravitational field. It depicts the force of attraction exerted by a body on another.
The following diagram shows the gravitational field lines:
Diagram C
These diagrams can be explained as:
- In Diagram A no field lines are depicting gravitational or magnetic fields and hence is incorrect.
- Diagram B lines show that the magnet will attract itself which is incorrect as it cannot attract itself.
- Diagram C shows the field lines from different and opposite charged species, they will exert attractive force towards each other.
Therefore diagram C is correct.
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