NEET Physics: Magnetism and Matter — MCQ Test 4

Q6. The magnetic field lines of a solenoid resemble those of a bar magnet because:

Q7. A material placed in a magnetic field reduces the field inside it slightly due to:

Q8. A solenoid with 800 turns per meter and current \( 1.5 \, \text{A} \) has a core with \( \mu_r = 300 \). What is \( B \) inside? (Take \( \mu_0 = 4\pi \times 10^{-7} \, \text{T m A}^{-1} \)).

Q9. A magnetic dipole experiences a torque of \( 0.02 \, \text{N m} \) in a field of \( 0.4 \, \text{T} \) at \( 90^\circ \). What is its magnetic moment?

Q10. A material with \( \mu_r = 250 \) and \( H = 700 \, \text{A m}^{-1} \) has \( B \): (Take \( \mu_0 = 4\pi \times 10^{-7} \, \text{T m A}^{-1} \)).

NEET Physics — Magnetism and Matter

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A bar magnet with original \( m = 3.0 \, \text{A m}^2 \) is cut along its length into two equal parts. What is \( m \) of each part?

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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 Original, Magnetic, Together, Material, Exhibits, and Diamagnetism.

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 bar magnet with original \( m = 3.0 \, \text{A m}^2 \) is cut along its length into two equal parts. What is \( m \) of each part?

  • A. 1.2 A m²
  • B. 1.3 A m²
  • C. 1.4 A m²
  • D. 1.5 A m²

Q2. The magnetic field lines of a bar magnet are closest together:

  • A. At the center of the magnet
  • B. Near the poles
  • C. Midway along its length
  • D. Far from the magnet

Q3. Which material exhibits perfect diamagnetism with \( \chi = -1 \) and is used in levitating trains?

  • A. Diamagnetic
  • B. Paramagnetic
  • C. Superconductor
  • D. Ferromagnetic

Q4. The magnetic field contribution \( B_m \) due to a material with \( M = 2.5 \times 10^5 \, \text{A m}^{-1} \) is: (Take \( \mu_0 = 4\pi \times 10^{-7} \, \text{T m A}^{-1} \)).

  • A. 0.28 T
  • B. 0.30 T
  • C. 0.31 T
  • D. 0.33 T

Q5. A magnetic dipole of moment \( 0.3 \, \text{A m}^2 \) is in a uniform field of \( 0.7 \, \text{T} \) at \( 30^\circ \). What is the torque on it?

  • A. 0.105 N m
  • B. 0.12 N m
  • C. 0.15 N m
  • D. 0.18 N m

+ 5 more questions in the actual test

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