Magnetism and matter practice · Hard

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Practice format and chapter quiz

These sets use single-correct-answer MCQs. They do not cover every JEE Main or JEE Advanced question format and are not full-length mock papers.

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1 Hard

1 of 3

Application +4 | -1

The magnetic needle of an oscillation magnetometer makes 10 oscillations per min under the action of earth’s magnetic field alone. When a bar magnet is placed at some distance along the axis of the needle, it makes 14 oscillations per min. If the bar magnet is turned so that its poles interchange their positions, then the new frequency of oscillation of the needle is

View answer and explanation

Correct option: B

\mathrm{vibs}

{\mathrm{m}^{ - 1}}

Correct Answer: 2

\mathrm{vibs}

{\mathrm{m}^{ - 1}}

. The frequency of oscillation is calculated by considering the magnetic field due to the bar magnet and its effect on the oscillation magnetometer.

2 Hard

2 of 3

Understanding +4 | -1

Given below are three statements.

Statement-A : Every magnetic configuration
must have a north and a south
pole.

Statement-B : Net magnetic flux through any
closed surface is zero, but net
electric flux may not be zero.

Statement-C : Materials showing Meissner
effect have zero magnetic
susceptibility.

In light of the above statements, choose the
correct answer from the options given below.

View answer and explanation

Correct option: D

Only B is correct

Option D (Only B is correct) is correct because Statement B accurately describes Gauss's law for magnetism and electricity, while Statements A and C are incorrect regarding magnetic poles and Meissner effect.

3 Hard

3 of 3

Remembering +4 | -1

The presence of magnetic field can be
determined using which one of the following
instruments?

View answer and explanation

Correct option: C

Magnetic needle

Option C (Magnetic needle) is correct because a magnetic needle or compass is used to detect the presence and direction of a magnetic field.

Revision notes and key takeaways

Review MAGNETISM AND MATTER in your textbook or class notes, then use this set to check your understanding.

Key Takeaways

✓ This set contains 3 single-correct-answer MCQs on MAGNETISM AND MATTER.
✓ Try each question before opening its answer. Read the explanation where one is available.
✓ Sign in to save submitted answers. Revisit incorrect answers alongside your textbook or class notes.

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