NEET Physics: Magnetism and Matter — MCQ Test 1

Q6. A dipole with \( m = 0.9 \, \text{A m}^2 \) in \( B = 0.5 \, \text{T} \) at \( 90^\circ \) has torque:

Q7. A bar magnet produces a field of \( 5 \times 10^{-6} \, \text{T} \) at \( 0.4 \, \text{m} \) on its equatorial line. What is its magnetic moment? (Take \( \mu_0 = 4\pi \times 10^{-7} \, \text{T m A}^{-1} \)).

Q8. A solenoid with 1100 turns per meter and current \( 1.5 \, \text{A} \) has a core with \( \mu_r = 200 \). What is \( B \) inside? (Take \( \mu_0 = 4\pi \times 10^{-7} \, \text{T m A}^{-1} \)).

Q9. A bar magnet with \( m = 0.6 \, \text{A m}^2 \) produces a field at \( 0.3 \, \text{m} \) on its equatorial line. What is \( B \)? (Take \( \mu_0 = 4\pi \times 10^{-7} \, \text{T m A}^{-1} \)).

Q10. A superconductor has a susceptibility \( \chi \) of:

Q11. A bar magnet produces a field of \( 6 \times 10^{-6} \, \text{T} \) at \( 0.3 \, \text{m} \) on its equatorial line. What is its magnetic moment? (Take \( \mu_0 = 4\pi \times 10^{-7} \, \text{T m A}^{-1} \)).

Q12. Which of the following materials has \( \chi \) negative and tends to move from stronger to weaker magnetic field regions?

Q13. A bar magnet produces a field of \( 3 \times 10^{-6} \, \text{T} \) at \( 0.3 \, \text{m} \) on its equatorial line. What is its magnetic moment? (Take \( \mu_0 = 4\pi \times 10^{-7} \, \text{T m A}^{-1} \)).

Q14. Why do magnetic field lines never intersect, unlike some electric field lines in complex charge distributions?

Q15. Which material has a negative \( \chi \) and is weakly repelled by a magnetic field?

NEET Physics — Magnetism and Matter

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A solenoid produces \( B = 1.2 \, \text{T} \) with a core of \( \mu_r = 400 \) and \( n = 2000 \, \text{m}^{-1} \). What is the current \( I \)? (Take \( \mu_0 = 4\pi \times 10^{-7} \, \text{T m A}^{-1} \)).

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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 15 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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15
Medium
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Key concepts covered in this specific test include Solenoid, Produces, Magnetic, Equatorial, Ferromagnetic, and Material.

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 solenoid produces \( B = 1.2 \, \text{T} \) with a core of \( \mu_r = 400 \) 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

Q2. A bar magnet produces a magnetic field of \( 2 \times 10^{-5} \, \text{T} \) at a point \( 0.1 \, \text{m} \) along its axis. What is its magnetic moment? (Take \( \mu_0 = 4\pi \times 10^{-7} \, \text{T m A}^{-1} \)).

  • A. 0.02 A m²
  • B. 0.05 A m²
  • C. 0.1 A m²
  • D. 0.2 A m²

Q3. A bar magnet with \( m = 1.0 \, \text{A m}^2 \) produces a field at \( 0.25 \, \text{m} \) on its equatorial line. What is \( B \)? (Take \( \mu_0 = 4\pi \times 10^{-7} \, \text{T m A}^{-1} \)).

  • A. 6.0 × 10⁻⁶ T
  • B. 6.2 × 10⁻⁶ T
  • C. 6.4 × 10⁻⁶ T
  • D. 6.6 × 10⁻⁶ T

Q4. The reason a soft ferromagnetic material loses its magnetism when the external field is removed is:

  • A. Its susceptibility becomes negative
  • B. Its permeability becomes unity
  • C. Its domains remain permanently aligned
  • D. Its domains randomize without the field

Q5. A material’s ability to retain strong magnetism after an external field is removed is a property of:

  • A. Diamagnetic materials
  • B. Hard ferromagnetic materials
  • C. Paramagnetic materials
  • D. Superconductors

+ 10 more questions in the actual test

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