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Q. No.Given below are two statements:
Assertion (A):
Susceptibility is defined as the ratio of intensity of magnetization I to magnetic intensity H.
Reason (R):
Greater the value of susceptibility, smaller the value of the intensity of magnetization I.
1.
Both (A) and (R) are true and (R) is the correct explanation of (A).
2.
Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.
(A) is true but (R) is false.
4.
(A) is false but (R) is true.
Subtopic: Magnetization & Magnetic Intensity |
84%
From NCERT
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Given below are two statements:
| Assertion (A): | Magnetic susceptibility is a pure number. |
| Reason (R): | The value of magnetic susceptibility for vacuum is one. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Magnetic Materials |
From NCERT
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If a magnetic monopole were to exist, what would be appropriate units of its ‘strength’?
1. \(\text{Wb}/\text{T}\)
2. \(\text{T}/\text{m}^3\)
3. \(\text{C.m}/\text{s}\)
4. \(\text{D}/\text{T}\)
1. \(\text{Wb}/\text{T}\)
2. \(\text{T}/\text{m}^3\)
3. \(\text{C.m}/\text{s}\)
4. \(\text{D}/\text{T}\)
Subtopic: Analogy between Electrostatics & Magnetostatics |
52%
From NCERT
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Given below are two statements:
| Statement I: | All paramagnetic substances become diamagnetic as their temperature is lowered. |
| Statement II: | All ferromagnetic substances become paramagnetic when their temperature is lowered. |
| 1. | Statement I is incorrect and Statement II is correct. |
| 2. | Both Statement I and Statement II are correct. |
| 3. | Both Statement I and Statement II are incorrect. |
| 4. | Statement I is correct and Statement II is incorrect. |
Subtopic: Magnetic Materials |
55%
From NCERT
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A bar magnet having a magnetic moment of \(2.0\times10^{5}~\text{JT}^{-1}\) is placed along the direction of the uniform magnetic field of magnitude, \(B=14\times10^{-5}~\text{T}\). The work done in rotating the magnet slowly through \(60^\circ \) from the direction of the field is:
1. \(14~\text{J}\)
2. \(8.4~\text{J}\)
3. \(4~\text{J}\)
4. \(1.4~\text{J}\)
1. \(14~\text{J}\)
2. \(8.4~\text{J}\)
3. \(4~\text{J}\)
4. \(1.4~\text{J}\)
Subtopic: Bar Magnet |
90%
From NCERT
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The susceptibility of a paramagnetic material is \(99.\) The permeability of the material in Wb/A-m is:
(Permeability of free space, \(\mu_{0}=4\pi \times 10^{-7}\) Wb/A-m )
1. \(4 \pi \times 10^{-7} \)
2. \( 4 \pi \times 10^{-4} \)
3. \( 4 \pi \times 10^{-5} \)
4. \( 4 \pi \times 10^{-6}\)
(Permeability of free space, \(\mu_{0}=4\pi \times 10^{-7}\) Wb/A-m )
1. \(4 \pi \times 10^{-7} \)
2. \( 4 \pi \times 10^{-4} \)
3. \( 4 \pi \times 10^{-5} \)
4. \( 4 \pi \times 10^{-6}\)
Subtopic: Magnetic Materials |
85%
From NCERT
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The universal property of all substances is:
| 1. | diamagnetism only |
| 2. | ferromagnetism only |
| 3. | paramagnetism only |
| 4. | both paramagnetism and diamagnetism |
Subtopic: Magnetic Materials |
62%
From NCERT
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The coercivity of a small magnet when the ferromagnet gets demagnetised is \(3\times 10^{3}~\text{Am}^{-1}\). The current required to be passed in a solenoid coil of length \(10~\text{cm}\) and the number of turns \(100,\) so that the magnet gets completely demagnetised when placed inside the solenoid is:
1. \(6~\text{A}\)
2. \(30~\text{mA}\)
3. \(3~\text{A}\)
4. \(1.5~\text{A}\)
1. \(6~\text{A}\)
2. \(30~\text{mA}\)
3. \(3~\text{A}\)
4. \(1.5~\text{A}\)
Subtopic: Magnetization & Magnetic Intensity |
76%
From NCERT
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If the work done in turning a magnet of magnetic moment \(M\) by an angle of \(90^\circ\) from magnetic meridian is \(n\) times the corresponding work done to turn it through an angle of \(60^\circ,\) then the value of \(n\) is:
1. \(1\over 2\)
2. \(2\)
3. \(\sqrt 3\over 2\)
4. \(2\over \sqrt 3\)
1. \(1\over 2\)
2. \(2\)
3. \(\sqrt 3\over 2\)
4. \(2\over \sqrt 3\)
Subtopic: Analogy between Electrostatics & Magnetostatics |
70%
From NCERT
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Select the correct option based on the statements:
| Statement I: | The magnetic field of a circular loop at very far away point on the axial line varies with distance as like that of a magnetic dipole. |
| Statement II: | The magnetic field due to magnetic dipole varies inversely with the square of the distance from the centre on the axial line. |
| 1. | Statement I is correct and Statement II is incorrect. |
| 2. | Statement I is incorrect and Statement II is correct. |
| 3. | Both Statement I and Statement II are correct. |
| 4. | Both Statement I and Statement II are incorrect. |
Subtopic: Analogy between Electrostatics & Magnetostatics |
54%
From NCERT
NEET - 2022
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