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

A

Explanation

In the presence of an external magnetic field, the atomic dipoles of paramagnetic substances are aligned along the field . The material gets magnetised and it produced an extra magnetic field in the material in the direction of the field . So for paramagnetic materials, the resultant field is greater than the applied field. As the body of a frog behaves like a paramagnetic substance, the smallest magnetic field on the body of the frog will be strong enough to lift it up