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Q. No.Given below are two statements:
Assertion (A):
When a magnet is brought near iron nails, only translatory force acts on it.
Reason (R):
The field due to a magnet is generally uniform.
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 Field & Field Lines |
From NCERT
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Given below are two statements:
| Assertion (A): | Gauss's law for magnetism states that the net magnetic flux through any closed surface is zero. |
| Reason (R): | The magnetic monopoles do not exist. North and South poles occur in pairs, allowing vanishing net magnetic flux through the surface. |
| 1. | (A) is True but (R) is False. |
| 2. | (A) is False but (R) is True. |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
Subtopic: Analogy between Electrostatics & Magnetostatics |
75%
From NCERT
NEET - 2022
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NEET 2025 - Target Batch
A bar magnet of the magnetic moment \(M\) is placed at right angles to a magnetic induction \(B.\) If a force \(F\) is experienced by each pole of the magnet, the length of the magnet will be:
| 1. | \(\dfrac{MB}{F}\) | 2. | \(\dfrac{BF}{M}\) |
| 3. | \(\dfrac{MF}{B}\) | 4. | \(\dfrac{F}{MB}\) |
Subtopic: Bar Magnet |
76%
From NCERT
NEET - 2013
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NEET 2025 - Target Batch
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A current carrying circular loop of wire is placed in a magnetic field \(B\), which makes an angle \(\theta\) with the normal to the loop. The radius of the loop is \(r\), and the loop carries a current \(i\). The magnetic interaction energy of the current carrying loop is \(E_B\) and the torque on the loop has the magnitude \(\tau_B\).
Which of the following, is independent of \(\theta?\)
Which of the following, is independent of \(\theta?\)
| 1. | \(E_B\cdot\tau_B\) | 2. | \(\dfrac{E_B}{\tau_B}\) |
| 3. | \(E_B^2+\tau_B^2\) | 4. | \(E_B^2-\tau_B^2\) |
Subtopic: Analogy between Electrostatics & Magnetostatics |
63%
From NCERT
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NEET 2025 - Target Batch
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A bar magnet with a magnetic moment of \(5~\text{Am}^2\) is initially in a stable equilibrium within a uniform external magnetic field of \(0.4~\text T.\) The work required to slowly rotate the bar magnet into a position of unstable equilibrium is:
1. \(1~\text J\)
2. \(2~\text J\)
3. \(3~\text J\)
4. \(4~\text J\)
1. \(1~\text J\)
2. \(2~\text J\)
3. \(3~\text J\)
4. \(4~\text J\)
Subtopic: Bar Magnet |
63%
From NCERT
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Two small paramagnetic samples are placed in an (otherwise uniform) strong external magnetic field \(B.\) If the two samples are placed with a separation that is along the direction of the external field \(B,\) then, the force exerted by the two samples on each other is:
| 1. | attractive. |
| 2. | repulsive. |
| 3. | zero. |
| 4. | any of the above depending on the external field \(B\) and the sample separation. |
Subtopic: Magnetic Materials |
55%
From NCERT
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NEET 2025 - Target Batch
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A small permanent magnet is placed 'antiparallel' to a uniform magnetic field \(B.\) A null point is found at a distance \(r,\) on the axis of the magnet. Then, \(r\) is proportional to (nearly):
| 1. | \(B^{-3}\) | 2. | \(B^{-2}\) |
| 3. | \(B^{-1/2}\) | 4. | \(B^{-1/3}\) |
Subtopic: Bar Magnet |
70%
From NCERT
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Subtopic: Magnetization & Magnetic Intensity |
84%
From NCERT
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The net magnetic flux through any closed surface is:
1. negative
2. zero
3. positive
4. infinity
1. negative
2. zero
3. positive
4. infinity
Subtopic: Analogy between Electrostatics & Magnetostatics |
86%
From NCERT
NEET - 2023
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NEET 2025 - Target Batch
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A short bar magnet of magnetic moment \(0.4~\text{JT}^{-1}\) is placed in a uniform magnetic field of \(0.16~\text{T}\). The magnet is in stable equilibrium when the potential energy is:
1. \(0.064~\text{J}\)
2. \(-0.064~\text{J}\)
3. zero
4. \(-0.082~\text{J}\)
1. \(0.064~\text{J}\)
2. \(-0.064~\text{J}\)
3. zero
4. \(-0.082~\text{J}\)
Subtopic: Analogy between Electrostatics & Magnetostatics |
85%
From NCERT
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