NEET Physics: Magnetism and Matter — MCQ Test 21

Q6. Which material has \( \chi = -1 \) and completely expels magnetic field lines?

Q7. The primary reason a diamagnetic material develops a weak opposing magnetic moment in an external field is:

Q8. A dipole with \( m = 0.7 \, \text{A m}^2 \) in \( B = 0.6 \, \text{T} \) at \( 30^\circ \) has torque:

Q9. The magnetic potential energy of a dipole with \( m = 0.8 \, \text{A m}^2 \) in a field \( B = 0.25 \, \text{T} \) at \( 180^\circ \) is:

Q10. A solenoid with 1300 turns per meter and current \( 2 \, \text{A} \) has a core with \( \mu_r = 100 \). What is \( B \) inside? (Take \( \mu_0 = 4\pi \times 10^{-7} \, \text{T m A}^{-1} \)).

NEET Physics — Magnetism and Matter

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A paramagnetic material with \( \chi = 4 \times 10^{-4} \) in \( H = 2000 \, \text{A m}^{-1} \) has magnetization \( M \):

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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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10
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Key concepts covered in this specific test include Paramagnetic, Material, Magnetization, Magnetic, Solenoid, and Parallel.

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 paramagnetic material with \( \chi = 4 \times 10^{-4} \) in \( H = 2000 \, \text{A m}^{-1} \) has magnetization \( M \):

  • A. 0.6 A m⁻¹
  • B. 0.8 A m⁻¹
  • C. 1.0 A m⁻¹
  • D. 1.2 A m⁻¹

Q2. A bar magnet with \( m = 2.8 \, \text{A m}^2 \) is at \( 0.4 \, \text{m} \) along its axis. What is \( B \)? (Take \( \mu_0 = 4\pi \times 10^{-7} \, \text{T m A}^{-1} \)).

  • A. 8.0 × 10⁻⁶ T
  • B. 8.5 × 10⁻⁶ T
  • C. 8.7 × 10⁻⁶ T
  • D. 8.75 × 10⁻⁶ T

Q3. The magnetic field lines inside a solenoid are nearly parallel because:

  • A. The field cancels outside
  • B. The solenoid has no poles
  • C. The current loops produce a uniform field
  • D. The field lines diverge internally

Q4. A magnetic dipole of moment \( 0.2 \, \text{A m}^2 \) is in a uniform field of \( 0.9 \, \text{T} \) at \( 30^\circ \). What is the torque on it?

  • A. 0.09 N m
  • B. 0.10 N m
  • C. 0.12 N m
  • D. 0.15 N m

Q5. A dipole with \( m = 0.5 \, \text{A m}^2 \) in a field \( B = 0.6 \, \text{T} \) at \( 180^\circ \) has potential energy:

  • A. 0.25 J
  • B. 0.3 J
  • C. 0.35 J
  • D. 0.4 J

+ 5 more questions in the actual test

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