Question

A paramagnetic substance when placed in an externally applied non-uniform magnetic field tends to ___________.

• A. increase the applied field
• B. decrease the applied field
• C. vary the applied field
• D. change the applied field

Answer 1

The correct option is A increase the applied field

Paramagnetic substances are the substances which are feebly attracted by a magnet. When a non-uniform external magnetic field is applied to a paramagnetic substance the magnetic field tries to aligned the magnetic moment in the direction of the field

Completely alignment is however not possible, on account of thermal vibration. A better allingement can be achieved by increasing the strength of the applied magnetic field.