True or False: Air has a less reluctance to magnetic lines of force.

The statement regarding air having less reluctance to magnetic lines of force is indeed false. In physics, reluctance is a measure of the opposition that a material offers to the establishment of a magnetic field. Air, being a non-magnetic and non-conductive medium, actually presents a higher reluctance to magnetic lines of force compared to ferromagnetic materials like iron or steel, which readily allow magnetic lines to pass through them with minimal opposition.

Materials that are good conductors of magnetism have low reluctance, allowing magnetic lines to pass easily, while materials with high reluctance, such as air, impede the flow of these lines. Therefore, it is accurate to say that air does not facilitate magnetic lines of force in any significant manner, confirming that the correct answer to the question is indeed false.