NEET Magnetism and Matter PYQ practice sheet

5 previous-year NEET Physics questions from Magnetism and Matter, newest papers first. Magnetism and Matter carries 7 of the Physics questions in NEET 2020 to 2026, so this is a good place to test yourself after revising the chapter. Marking: +4 correct, −1 wrong.

1. 1.

   NEET 2024

   Match List-I with List-II. List-I (Material): (A) Diamagnetic, (B) Ferromagnetic, (C) Paramagnetic, (D) Non-magnetic List-II (Susceptibility $\chi$): (I) $\chi=0$, (II) $0>\chi\ge-1$, (III) $\chi\gg1$, (IV) $0<\chi<\varepsilon$ (a small positive number) Choose the correct answer from the options given below:

   • (A)
     A-IV, B-III, C-II, D-I
   • (B)
     A-II, B-I, C-III, D-IV
   • (C)
     A-II, B-III, C-IV, D-I
   • (D)
     A-III, B-II, C-I, D-IV
2. 2.

   NEET 2024

   In a uniform magnetic field of 0.049 T, a magnetic needle performs 20 complete oscillations in 5 seconds as shown. The moment of inertia of the needle is $9.8\times10^{-6}\ \text{kg m}^2$. If the magnitude of magnetic moment of the needle is $x\times10^{-5}\ \text{A m}^2$, then the value of '$x$' is: A magnetic needle is suspended by a thread and is free to oscillate in a horizontal uniform magnetic field $\vec B$.

   • (A)
     $1280\pi^2$
   • (B)
     $50\pi^2$
   • (C)
     $5\pi^2$
   • (D)
     $128\pi^2$
3. 3.

   NEET 2024

   An iron bar of length $L$ has magnetic moment $M$. It is bent at the middle of its length such that the two arms make an angle $60^\circ$ with each other. The magnetic moment of this new magnet is:

   • (A)
     $\dfrac{M}{2}$
   • (B)
     $2M$
   • (C)
     $\dfrac{M}{\sqrt3}$
   • (D)
     $M$
4. 4.

   NEET 2023

   The net magnetic flux through any closed surface is :

   • (A)
     Negative
   • (B)
     Zero
   • (C)
     Positive
   • (D)
     Infinity
5. 5.

   NEET 2020

   An iron rod of susceptibility $599$ is subjected to a magnetising field of $1200$ A m$^{-1}$. The permeability of the material of the rod is : ($\mu_0 = 4\pi\times10^{-7}$ T m A$^{-1}$)

   • (A)
     $2.4\pi\times10^{-4}$ T m A$^{-1}$
   • (B)
     $8.0\times10^{-5}$ T m A$^{-1}$
   • (C)
     $2.4\pi\times10^{-5}$ T m A$^{-1}$
   • (D)
     $2.4\pi\times10^{-7}$ T m A$^{-1}$