1
NEET 2024 (Re-Examination)
+4
-1

The magnetic moment of an iron bar is $$M$$. It is now bent in such a way that it forms an arc section of a circle subtending an angle of $$60^{\circ}$$ at the centre. The magnetic moment of this arc section is

A
$$\frac{3 M}{\pi}$$
B
$$\frac{4 M}{\pi}$$
C
$$\frac{M}{\pi}$$
D
$$\frac{2 M}{\pi}$$
2
NEET 2024
+4
-1

In a uniform magnetic field of $$0.049 \mathrm{~T}$$, a magnetic needle performs 20 complete oscillations in 5 seconds as shown. The moment of inertia of the needle is $$9.8 \times 10^{-6} \mathrm{~kg} \mathrm{~m}^2$$. If the magnitude of magnetic moment of the needle is $$x \times 10^{-5} \mathrm{~Am}^2$$, then the value of '$$x$$' is :

A
5$$\pi^2$$
B
128$$\pi^2$$
C
50$$\pi^2$$
D
1280$$\pi^2$$
3
NEET 2024
+4
-1

In the above diagram, a strong bar magnet is moving towards solenoid-2 from solenoid-1. The direction of induced current in solenoid-1 and that in solenoid-2, respectively, are through the directions:

A
AB and DC
B
BA and CD
C
AB and CD
D
BA and DC
4
NEET 2024
+4
-1

Match List I with List II

List I
(Material)
List II
(Susceptibility ($$\chi)) A. Diamagnetic I.$$\chi=0$$B. Ferromagnetic II.$$0 > \chi \ge -1$$C. Paramagnetic III.$$\chi >> 1$$D. Non-magnetic IV.$$0 < \chi < \varepsilon (a small positive number)

Choose the correct answer from the options given below.

A
A-II, B-III, C-IV, D-I
B
A-II, B-I, C-III, D-IV
C
A-III, B-II, C-I, D-IV
D
A-IV, B-III, C-II, D-I
EXAM MAP
Medical
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