# A Paramagnetic Material is Placed in a Magnetic Field. (A) If the Magnetic Field is Increased, the Magnetisation is Increased. (B) If the Temperature is Increased, the Magnetisation is Increased. - Physics

MCQ

A paramagnetic material is placed in a magnetic field. Consider the following statements:-
(A) If the magnetic field is increased, the magnetisation is increased.
(B) If the temperature is increased, the magnetisation is increased.

#### Options

• A and B are true.

• A is true but B is false.

• B is true but A is false.

• A and B are false.

#### Solution

A is true but B is false.

If the magnetic field is increased, magnetisation of paramagnetic material placed in magnetic field is also increases. Hence, option (a) is correct.

Magnetization (I) is given by,

$\overrightarrow{I} = \frac{\overrightarrow{M}}{V}$

As the temperature is increased, magnetic moments of paramagnetic material becomes more randomly aligned due to incresed thermal motion. This leads decrease in the magnetization I.

Is there an error in this question or solution?

#### APPEARS IN

HC Verma Class 11, Class 12 Concepts of Physics Vol. 2
Chapter 15 Magnetic Properties of Matter
MCQ | Q 1 | Page 285