A frog can be levitated in a magnetic field produced by a current in a vertical solenoid placed below the frog. This is possible because the body of the frog behaves as

Options

A. paramagnetic
B. diamagnetic
C. ferromagnetic
D. antiferromagnetic

Answer

B

Explanation

(b) Some substanes when placed in a magnetic field are freebly magnetised in the opposite direction of the magnetising field. These substance, when brought close to a pole of a powerful magnet are repelled away from the magnet. The body of the frog behaves like a diamagentic substane, hence the samllest magnetic field placed below the body of the frog will be strong enough to lift it..