JEE Main 2025 (Online) 3rd April Evening Shift | Magnetic Properties of Matter Question 3 | Physics

1

JEE Main 2025 (Online) 3rd April Evening Shift

MCQ (Single Correct Answer)

+4

-1

A magnetic dipole experiences a torque of $80 \sqrt{3} \mathrm{~N} \mathrm{~m}$ when placed in uniform magnetic field in such a way that dipole moment makes angle of $60^{\circ}$ with magnetic field. The potential energy of the dipole is :

A

$$ \text { }-40 \sqrt{3} \mathrm{~J} $$

B

-80 J

C

80 J

D

-60 J

2

JEE Main 2025 (Online) 2nd April Morning Shift

MCQ (Single Correct Answer)

+4

-1

The relationship between the magnetic susceptibility $(x)$ and the magnetic permeability $(\mu)$ is given by :

( $\mu_0$ is the permeability of free space and $\mu_T$ is relative permeability)

A

$X=\frac{\mu}{\mu_0}-1$

B

$X=\frac{\mu_{\mathrm{r}}}{\mu_0}+1$

C

$\chi=\mu_r+1$

D

$X=1-\frac{\mu}{\mu_0}$

3

JEE Main 2025 (Online) 29th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

Match List - I with List - II.

List - I	List - II
(A) Magnetic induction	(I) Ampere meter²
(B) Magnetic intensity	(II) Weber
(C) Magnetic flux	(III) Gauss
(D) Magnetic moment	(IV) Ampere meter

Choose the correct answer from the options given below:

A

(A)-(III), (B)-(IV), (C)-(II), (D)-(I)

B

(A)-(III), (B)-(II), (C)-(I), (D)-(IV)

C

(A)-(III), (B)-(IV), (C)-(I), (D)-(II)

D

(A)-(I), (B)-(II), (C)-(III), (D)-(IV)

4

JEE Main 2024 (Online) 8th April Morning Shift

MCQ (Single Correct Answer)

+4

-1

Paramagnetic substances:

A. align themselves along the directions of external magnetic field.

B. attract strongly towards external magnetic field.

C. has susceptibility little more than zero.

D. move from a region of strong magnetic field to weak magnetic field.

Choose the most appropriate answer from the options given below:

A

A, B, C Only

B

A, C Only

C

A, B, C, D

D

B, D Only