Opposite poles of different magnets will attract each other and like poles will repel each other. this is an example of which of the following? lawhypothesistheory

Explanation: Opposite poles of different magnets attract each other whereas same poles repel each each other this is an example of theory of magnetism and law of attraction that opposites attract. In case of magnets north- north and south- south poles repel each other while north-south and south - north attracts each other. Since earth is a big magnet and its magnetic north and south pole follows the same rule of attraction.

the answer is b ) square root of 5