NEET Physics: Magnetism and Matter — MCQ Test 22

Q6. A paramagnetic material with \( \chi = 3 \times 10^{-3} \) in \( H = 400 \, \text{A m}^{-1} \) has magnetization \( M \):

Q7. A bar magnet with magnetic moment \( 1.0 \, \text{A m}^2 \) is placed at a distance of \( 0.5 \, \text{m} \) along its axis. What is the magnetic field \( B \) at that point? (Take \( \mu_0 = 4\pi \times 10^{-7} \, \text{T m A}^{-1} \)).

Q8. A material with susceptibility \( \chi = 5 \times 10^{-3} \) has a relative permeability \( \mu_r \) of:

Q9. A material with \( B = 0.2 \, \text{T} \) and \( H = 1000 \, \text{A m}^{-1} \) has magnetization \( M \). What is \( M \)? (Take \( \mu_0 = 4\pi \times 10^{-7} \, \text{T m A}^{-1} \)).

Q10. Which material retains magnetization after the external field is removed and is used in permanent magnets?

NEET PhysicsMagnetism and Matter

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A magnetic needle with magnetic moment \( 0.1 \, \text{A m}^2 \) is placed in a uniform magnetic field of \( 0.2 \, \text{T} \) at an angle of \( 60^\circ \) with the field. What is the torque acting on it?

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Physics preparation, focusing specifically on the chapter Magnetism and Matter. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Key concepts covered in this specific test include Magnetic, Solenoid, Produces, Material, Susceptibility, and Negative.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1. A magnetic needle with magnetic moment \( 0.1 \, \text{A m}^2 \) is placed in a uniform magnetic field of \( 0.2 \, \text{T} \) at an angle of \( 60^\circ \) with the field. What is the torque acting on it?

  • A. 0.01 N m
  • B. 0.017 N m
  • C. 0.02 N m
  • D. 0.03 N m

Q2. A solenoid produces \( B = 1.5 \, \text{T} \) with a core of \( \mu_r = 500 \) and \( n = 2000 \, \text{m}^{-1} \). What is the current \( I \)? (Take \( \mu_0 = 4\pi \times 10^{-7} \, \text{T m A}^{-1} \)).

  • A. 1.0 A
  • B. 1.1 A
  • C. 1.2 A
  • D. 1.3 A

Q3. A material’s susceptibility becomes negative and large when:

  • A. It is heated above a critical point
  • B. It aligns weakly with the field
  • C. It forms magnetic domains
  • D. It becomes superconducting

Q4. A material with \( B = 0.55 \, \text{T} \) and \( H = 3500 \, \text{A m}^{-1} \) has \( M \): (Take \( \mu_0 = 4\pi \times 10^{-7} \, \text{T m A}^{-1} \)).

  • A. 4.3 × 10⁵ A m⁻¹
  • B. 4.32 × 10⁵ A m⁻¹
  • C. 4.33 × 10⁵ A m⁻¹
  • D. 4.34 × 10⁵ A m⁻¹

Q5. A dipole with \( m = 0.2 \, \text{A m}^2 \) in \( B = 0.8 \, \text{T} \) at \( 45^\circ \) has torque:

  • A. 0.09 N m
  • B. 0.10 N m
  • C. 0.105 N m
  • D. 0.11 N m

+ 5 more questions in the actual test

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