Question

a group claims that \stronger magnets always repel more than weaker magnets.\ which test would best refute their claim?
use strong magnets facing opposite poles and observe attraction
use weak magnets facing like poles
move strong magnets farther apart
use a magnet and a paper clip

Explanation:

To refute the claim that stronger magnets always repel more than weaker ones, we need a test where a stronger magnet shows less repulsion than a weaker one, or fails to repel more. Moving strong magnets farther apart reduces their repulsive force; at a sufficient distance, their repulsion will be less than that of weaker magnets placed close together, directly countering the absolute claim. The other options do not address the comparison of repulsion strength between strong and weak magnets: option A tests attraction, option B only uses weak magnets, option C tests magnet strength on a non-magnetic object (paper clip) not repulsion between magnets.

Answer:

Move strong magnets farther apart