Are these practice questions for Magnetism And Matter based on the CBSE pattern?

Yes. Every practice question is modeled on the CBSE Class 12 - Science Physics exam pattern — including MCQs, assertion-reason questions, and short-answer formats that frequently appear in CBSE papers.

Are the practice questions for Magnetism And Matter free?

Yes. Every chapter includes free practice questions for Class 12 - Science students to get you started.

What types of questions are included?

The practice set for Magnetism And Matter mainly includes MCQs and CBSE-style short-answer questions, with instant feedback on each answer. For full-length textbook practice, use the NCERT Solutions page.

Are the practice questions suitable for board exam preparation?

Yes. The questions test the same concepts and depth that CBSE asks in board exams. After finishing, also solve the NCERT and NCERT Exemplar exercises for Magnetism And Matter for full coverage.

How many practice questions are there for Magnetism And Matter?

The number scales with chapter length and concept density. Each chapter typically has 15-50 practice questions across MCQ and short-answer formats.

Magnetism And Matter Class 12 Physics Practice Questions with Answers

easy

State Gauss's law for magnetism and write its mathematical expression.

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easy

Calculate the torque experienced by a short bar magnet with a magnetic moment of

0.40 \text{ J T}^{-1}

when it is placed in a uniform magnetic field of

0.16 \text{ T}

, with its axis making an angle of

60^{\circ}

with the field.

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easy

Analyze what happens to the magnetic poles if a straight bar magnet is bent into a U-shape.

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easy

A closely wound solenoid has

1000

turns and an area of cross-section of

2.0 \times 10^{-4} \text{ m}^2

. It carries a current of

4.0 \text{ A}

. Calculate its associated magnetic moment.

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easy

Name the physical quantity that is defined as the net magnetic moment per unit volume of a material.

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easy

Evaluate the claim that a current-carrying toroid is an ideal example of a magnetic configuration that lacks distinct north and south poles.

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easy

List any three fundamental properties of magnetic field lines.

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easy

A long solenoid has

1000

turns per metre and carries a current of

2.5

A. Calculate the magnetic intensity (

H

) inside the solenoid.

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easy

Define magnetic susceptibility, represented by the symbol

\chi

.

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medium

Apply the concept of magnetic susceptibility to classify a material for which

\chi = -1.0

.

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medium

Justify why magnetic monopoles are considered non-existent, using Gauss's law for magnetism and the behavior of a bar magnet when broken.

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medium

Justify why soft iron is preferred for making cores of electromagnets, while steel is preferred for making permanent magnets, by evaluating their respective magnetic properties like retentivity and coercivity.

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medium

Evaluate the analogy between an electric dipole and a magnetic dipole. Your evaluation should highlight one key similarity in their far-field behavior and one fundamental difference concerning the nature of their field lines.

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medium

Justify the statement: 'Diamagnetism is a universal property present in all materials, but it is often masked.'

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medium

Describe the classification of materials into diamagnetic, paramagnetic, and ferromagnetic based on their magnetic susceptibility (

\chi

) and relative magnetic permeability (

\mu_r

).

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medium

Analyze why the magnetic field lines of a bar magnet form continuous closed loops, while the electric field lines of an electric dipole do not.

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medium

Propose a method to determine which of two identical-looking iron bars, A and B, is a magnet, using nothing but the two bars themselves. Justify why your method works.

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medium

A short bar magnet has a magnetic moment of

0.5 \text{ J T}^{-1}

. Recall the formula and calculate the magnitude of the magnetic field on its axis at a distance of

10

cm from its center. (Use

\frac{\mu_0}{4\pi} = 10^{-7} \text{ T m A}^{-1}

).

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medium

A bar magnet with a magnetic moment of

2.0 \text{ J T}^{-1}

is aligned with a uniform magnetic field of

0.25 \text{ T}

. Calculate the work done by an external agent to rotate the magnet from its most stable position to its most unstable position.

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medium

Apply Gauss's law for magnetism to analyze why magnetic monopoles are considered non-existent.

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medium

Recall the expression for the magnetic potential energy

U_m

of a magnetic dipole in a uniform magnetic field

\mathbf{B}

. Identify the orientations for the most stable and most unstable equilibrium.

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medium

Compare the behavior of diamagnetic and paramagnetic substances when placed in an external non-uniform magnetic field. Contrast their magnetic susceptibility values.

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medium

Design a simple electromagnet using a solenoid and a soft iron core. Justify your choice of a soft iron core by evaluating its magnetic properties in this application.

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medium

Critique the depiction of magnetic field lines for a finite solenoid as being 'completely straight and confined' within the solenoid and abruptly ending at the edges. Propose corrections to make the diagram physically accurate.

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medium

Design an experiment to distinguish between a paramagnetic and a diamagnetic liquid. Your design should specify the apparatus needed and the expected observations that would justify your conclusion.

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medium

Critique the statement: 'Magnetic field lines represent the lines of force on a moving charged particle at every point.' Justify your critique.

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medium

What is the value of magnetic susceptibility (

\chi

) for a perfect diamagnet, such as a superconductor?

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medium

Summarize the key differences between electrostatic field lines and magnetic field lines regarding their origin and path.

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medium

Compare and contrast magnetism with electrostatics by creating a table that shows the electrostatic analog for key magnetic quantities and laws.

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medium

Recall the formula for the torque experienced by a magnetic dipole in a uniform magnetic field. Explain each term in the vector equation.

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medium

A short bar magnet has a magnetic moment of

0.64 \text{ J T}^{-1}

. Calculate the magnitude of the magnetic field produced by the magnet at a distance of

20 \text{ cm}

from its center on (a) its axial line and (b) its equatorial line.

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medium

Explain why magnetic monopoles are not known to exist, based on the behavior of a bar magnet when it is broken.

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medium

Explain the phenomenon of diamagnetism and describe how a diamagnetic material behaves in an external magnetic field.

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medium

Formulate an expression for the work done by an external agent in rotating a magnetic dipole of moment

\mathbf{m}

from its stable equilibrium position to its unstable equilibrium position in a uniform magnetic field

\mathbf{B}

.

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medium

A bar magnet of magnetic moment

m = 0.5 \text{ J T}^{-1}

is in a uniform magnetic field of

0.2 \text{ T}

. Calculate the magnetic potential energy of the magnet when its axis is aligned (a) parallel to the field (stable equilibrium) and (b) anti-parallel to the field (unstable equilibrium).

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hard

Examine the properties that differentiate soft ferromagnetic materials from hard ferromagnetic materials. Apply this knowledge to suggest a suitable material for the core of an electromagnet and for a permanent magnet, justifying your choices.

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hard

Formulate a hypothesis to explain the Meissner effect in superconductors, treating it as an extreme case of a known magnetic property.

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hard

Analyze the validity of the statement: 'Every magnetic field configuration must have a north pole and a south pole.' Use the magnetic field of a toroid as a counterexample.

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hard

A solenoid with

500

turns per metre carries a current of

3 \text{ A}

. It is filled with a magnetic material having a relative magnetic permeability of

200

. Calculate (a) the magnetic intensity

H

, (b) the magnetisation

M

, and (c) the magnetic field

B

inside the core.

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hard

Define magnetic intensity, represented by the symbol

\mathbf{H}

.

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hard

You are given two identical iron bars, A and B. One is magnetised, but you do not know which. Demonstrate a method to identify the magnet using only the two bars.

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hard

Design an experiment to determine the magnetic moment

m

of a short bar magnet. Assume you are provided with a compass magnetometer and access to the Earth's horizontal magnetic field

B_H

.

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hard

Propose a modification to Gauss's law of magnetism if magnetic monopoles with magnetic charge

q_m

were discovered.

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hard

A student claims that configuration

PQ_6

in the provided text's Figure 5.4 is the most stable among all shown configurations. Evaluate this claim and justify it using the concept of potential energy

U_m = -\mathbf{m} \cdot \mathbf{B}

.

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hard

Explain the concept of a bar magnet being an equivalent solenoid. Describe how the magnetic field lines of both are similar.

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Magnetism And MatterClass 12 Physics Practice Questions