SSC Selection Post 2023 PYQ — Question 48

The correct answer is Option 1 i.e. When field lines are crowded.

 

The strength of a magnetic field is directly indicated by the density or closeness of its magnetic field lines. Where the field lines are crowded together, the magnetic field is stronger. Conversely, where the lines are spread farther apart, the field is weaker. This is most noticeable near the poles of a magnet, where the field lines are highly concentrated, indicating the strongest magnetic force.