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Magnetism and Matter — NEET Physics MCQs

30 questions written by hand against the NCERT chapter. Every wrong option is explained, not just the right one.

30questions
10/14/6easy / medium / hard
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Sample questions from this chapter

What happens when a bar magnet is cut into two pieces?
  1. Each piece becomes a smaller magnet with north and south poles ✓
  2. One piece is only north and the other only south
  3. Both pieces lose all magnetism
  4. Isolated poles appear briefly
Answer: A. Cutting divides the dipole distribution, producing two weaker complete magnets rather than separate poles.
Why not B: Magnetic monopoles are not produced by cutting a dipole.
Why not C: Each fragment retains aligned magnetic dipoles and remains magnetic.
Why not D: No isolated magnetic pole has been observed even transiently in this process.
What magnetic moment is associated with an N-turn planar coil carrying current I and enclosing area A?
  1. NIA ✓
  2. IA/N
  3. NI/A
  4. NIA²
Answer: A. A current loop is a magnetic dipole of moment IA; N closely wound turns give m=NIA.
Why not B: Identical turns add their moments instead of dividing the one-turn value.
Why not C: A larger loop produces a larger moment, so area cannot be in the denominator.
Why not D: Magnetic moment contains the first power of enclosed area.
A short bar magnet at 30.0° to a uniform 0.250 T field experiences torque 4.50×10⁻² N m. What is its magnetic moment?
  1. 0.0900 A m²
  2. 0.180 A m²
  3. 0.360 A m² ✓
  4. 0.720 A m²
Answer: C. m=τ/(B sinθ)=4.50×10⁻²/(0.250×0.500)=0.360 A m².
Why not A: This multiplies the torque by B and sin30° rather than dividing by both.
Why not B: This divides by B but omits the sin30° orientation factor.
Why not D: This treats sin30° as one-fourth rather than one-half.

These are 3 of the 30 questions in the test. Take the full chapter test →

Read the chapter first

Every NCERT question in this chapter is solved, free: NCERT solutions — Magnetism and Matter →

Other NEET Physics chapters

Units and MeasurementMotion in a Straight LineMotion in a PlaneLaws of MotionWork Energy and PowerSystems of Particles and Rotational Motion

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Questions

How many NEET questions are there on Magnetism and Matter?

This chapter test has 30 questions — 10 easy, 14 medium and 6 hard — all written against the NCERT Class 12 chapter.

Is this NEET Physics chapter test free?

Yes. Every chapter test is free with no login, and you get your all-India rank on every one. Nothing on the site is on sale right now.

Do the questions explain the wrong options?

Yes — every distractor carries its own explanation naming the specific misconception that makes a student pick it. That is the part most question banks skip, and it is the part that changes your next attempt.