A sensitive magnetic instrument can be shielded very effectively from outside magnetic fields by placing it inside a box of
1. Teak wood
2. Plastic material
3. Soft iron of high permeability
4. A metal of high conductivity

Subtopic:  Magnetization & Magnetic Intensity |
 67%
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The variation of the intensity of magnetisation (I) with respect to the magnetising field (H) in a diamagnetic substance is described by the graph

1. OD                            2. OC

3. OB                            4. OA

Subtopic:  Magnetization & Magnetic Intensity |
 70%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh

If Bo is magnetic flux density in vacuum produced by a magnetising force and magnetic flux density produced by the magnetisation of a material due to the same magnetising force is Bm, then the total magnetic flux density in the material is :

1. B+ Bm
2. B- Bm
3. BBm
4. BmB

Subtopic:  Magnetization & Magnetic Intensity |
 67%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following is not dimensionless?
(where symbols stand for their usual meanings in magnetism)

1. IH

2. Bμ0H

3. μr

4. μrBH

Subtopic:  Magnetization & Magnetic Intensity |
From NCERT
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The unit of intensity of the magnetising field is :

1.NWb

2. Jm3×tesla

3. Jm×Wb

4. All of these

 

Subtopic:  Magnetization & Magnetic Intensity |
 81%
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The magnetic susceptibility of a substance is -0.0002 at room temperature. If this substance is kept in a uniform external magnetic field B, the net field inside the substance becomes B', then :

1. B'>B

2. B'<B

3. B' = B

4. B' = 0

Subtopic:  Magnetization & Magnetic Intensity |
 68%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh

A diamagnetic substance is kept in a uniform external magnetic field B. If the net magnetic field inside the substance is B', then

1. B'<B

2. B' = B

3. B'>B

4. Any of the above

Subtopic:  Magnetization & Magnetic Intensity |
 74%
From NCERT
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The magnetic moment of a magnet \((10 ~cm\times 4~cm\times1~cm)\) is \(4 ~Am^2\). Its intensity of magnetisation is:

1. 10A/m

2. 10A/m

3. 10A/m

4. 10A/m

Subtopic:  Magnetization & Magnetic Intensity |
 78%
From NCERT
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S.I. unit of intensity of magnetization is:

1. Ampere-metre 2. Ampere-metre2
3. Ampere/metre 4. Ampere/metre2
Subtopic:  Magnetization & Magnetic Intensity |
 62%
From NCERT
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The magnetization of a piece of iron or steel:

1. depends on the strength of the magnetizing field.
2. depends on external conditions such as temperature.
3. cannot be done beyond the saturation point.
4. all of these.

Subtopic:  Magnetization & Magnetic Intensity |
 88%
From NCERT
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