Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Magnetism and Matter

Question:

Below are mentioned some properties of ferromagnetic substances. Identify the correct ones.

(A) These have strong tendency to move from a region of weak magnetic field to strong magnetic field
(B) In these substances, atomic dipoles align themselves in a common direction over a macroscopic volume called domains
(C) Magnetisation of these materials is inversely, proportional to the absolute temperature $M \propto \frac{1}{T}$ (Curl's law)
(D) These materials show Meissners effect super conducting magnets which is used in magnetically leviated superfast trains
(E) The temperature of transition from ferromagnetic to paramagnetic to called Curies law

Choose the correct answer from the options given below:

Options:

(A), (B), (E) only

(B), (C), (D) only

(C), (D), (E) only

(B), (D), (E) only

Correct Answer:

(A), (B), (E) only

Explanation:

The correct answer is Option (1) → (A), (B), (E) only

(A) Ferromagnetic substance have large $\chi_m$ so they have tendency to move from weak magnetic field to strong magnetic field.

(B) Atoms have permanent magnetic moment which are organised in Domains.

(E) Above absolute temperature ferromagnetic materials looses their ferromagnetism & transition to paramagnetic.