360483
Assertion : Diamagnetic materials can exhibit magnetism. Reason : Diamagnetic materials have permanent magnetic dipole moment .
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Diamagnetic materials are typically repelled by magnetic fields. When placed in a magnetic field, they exhibit a weak form of magnetism called diamagnetism. Diamagnetic materials have no permanent magnetic dipole moment; instead, they develop induced magnetic moments in the opposite direction to the applied magnetic field. These induced moments are quite weak, and they do not result in a net attraction to the magnetic field. Therefore, diamagnetic materials do not exhibit magnetism in the same way that ferromagnetic or paramagnetic materials do. Diamagnetic materials do not have a permanent magnetic dipole moment. Instead, they develop temporary, induced magnetic moments when placed in an external magnetic field. These induced moments are opposite in direction to the applied field and are a result of the rearrangement of electron orbits within the atoms or molecules of the material. When the external magnetic field is removed, the induced moments vanish. Diamagnetic materials do not retain any permanent magnetism. The reason provided is not accurate, as it incorrectly states that diamagnetic materials have a permanent magnetic dipole moment. In reality, diamagnetic materials only exhibit weak, temporary diamagnetism when subjected to an external magnetic field. So, correct option is (3)
AIIMS - 2006
PHXII05:MAGNETISM and MATTER
360484
For diamagnetic materials, magnetic susceptibility is
1 Small and negative
2 Small and positive
3 Large and negative
4 Large and positive
Explanation:
Magnetic suspectibility is given by \(\chi=\mu_{r}-1\) where, \(\mu_{r}\) is the relative magnetic permeability Since, \(\mu_{r}\) for diamagnetic materials is less than or equal to 1 , therefore \(\chi\) is less than or equal to 0 for diamagnetic materials. Hence, magnetic suspectibility is small and negative for diamagnetic materials.
PHXII05:MAGNETISM and MATTER
360485
In a permanent magnet at room temperature
1 The individual molecules have non-zero magnetic moment which are all perfectly aligned
2 Magnetic moment of each molecule is zero
3 Domains are all perfectly aligned
4 Domains are partially aligned
Explanation:
In a permanent magnet at room temperature domains of a magnet are partially aligned due to thermal agitation.
NCERT Exemplar
PHXII05:MAGNETISM and MATTER
360486
If a magnetic substance is kept in a magnetic field, then which of the following substance is thrown out?
1 Ferromagnetic
2 Paramagnetic
3 Antiferromagnetic
4 Diamagnetism
Explanation:
Diamagnetic substances are repelled by magnetic field.
360483
Assertion : Diamagnetic materials can exhibit magnetism. Reason : Diamagnetic materials have permanent magnetic dipole moment .
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Diamagnetic materials are typically repelled by magnetic fields. When placed in a magnetic field, they exhibit a weak form of magnetism called diamagnetism. Diamagnetic materials have no permanent magnetic dipole moment; instead, they develop induced magnetic moments in the opposite direction to the applied magnetic field. These induced moments are quite weak, and they do not result in a net attraction to the magnetic field. Therefore, diamagnetic materials do not exhibit magnetism in the same way that ferromagnetic or paramagnetic materials do. Diamagnetic materials do not have a permanent magnetic dipole moment. Instead, they develop temporary, induced magnetic moments when placed in an external magnetic field. These induced moments are opposite in direction to the applied field and are a result of the rearrangement of electron orbits within the atoms or molecules of the material. When the external magnetic field is removed, the induced moments vanish. Diamagnetic materials do not retain any permanent magnetism. The reason provided is not accurate, as it incorrectly states that diamagnetic materials have a permanent magnetic dipole moment. In reality, diamagnetic materials only exhibit weak, temporary diamagnetism when subjected to an external magnetic field. So, correct option is (3)
AIIMS - 2006
PHXII05:MAGNETISM and MATTER
360484
For diamagnetic materials, magnetic susceptibility is
1 Small and negative
2 Small and positive
3 Large and negative
4 Large and positive
Explanation:
Magnetic suspectibility is given by \(\chi=\mu_{r}-1\) where, \(\mu_{r}\) is the relative magnetic permeability Since, \(\mu_{r}\) for diamagnetic materials is less than or equal to 1 , therefore \(\chi\) is less than or equal to 0 for diamagnetic materials. Hence, magnetic suspectibility is small and negative for diamagnetic materials.
PHXII05:MAGNETISM and MATTER
360485
In a permanent magnet at room temperature
1 The individual molecules have non-zero magnetic moment which are all perfectly aligned
2 Magnetic moment of each molecule is zero
3 Domains are all perfectly aligned
4 Domains are partially aligned
Explanation:
In a permanent magnet at room temperature domains of a magnet are partially aligned due to thermal agitation.
NCERT Exemplar
PHXII05:MAGNETISM and MATTER
360486
If a magnetic substance is kept in a magnetic field, then which of the following substance is thrown out?
1 Ferromagnetic
2 Paramagnetic
3 Antiferromagnetic
4 Diamagnetism
Explanation:
Diamagnetic substances are repelled by magnetic field.
360483
Assertion : Diamagnetic materials can exhibit magnetism. Reason : Diamagnetic materials have permanent magnetic dipole moment .
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Diamagnetic materials are typically repelled by magnetic fields. When placed in a magnetic field, they exhibit a weak form of magnetism called diamagnetism. Diamagnetic materials have no permanent magnetic dipole moment; instead, they develop induced magnetic moments in the opposite direction to the applied magnetic field. These induced moments are quite weak, and they do not result in a net attraction to the magnetic field. Therefore, diamagnetic materials do not exhibit magnetism in the same way that ferromagnetic or paramagnetic materials do. Diamagnetic materials do not have a permanent magnetic dipole moment. Instead, they develop temporary, induced magnetic moments when placed in an external magnetic field. These induced moments are opposite in direction to the applied field and are a result of the rearrangement of electron orbits within the atoms or molecules of the material. When the external magnetic field is removed, the induced moments vanish. Diamagnetic materials do not retain any permanent magnetism. The reason provided is not accurate, as it incorrectly states that diamagnetic materials have a permanent magnetic dipole moment. In reality, diamagnetic materials only exhibit weak, temporary diamagnetism when subjected to an external magnetic field. So, correct option is (3)
AIIMS - 2006
PHXII05:MAGNETISM and MATTER
360484
For diamagnetic materials, magnetic susceptibility is
1 Small and negative
2 Small and positive
3 Large and negative
4 Large and positive
Explanation:
Magnetic suspectibility is given by \(\chi=\mu_{r}-1\) where, \(\mu_{r}\) is the relative magnetic permeability Since, \(\mu_{r}\) for diamagnetic materials is less than or equal to 1 , therefore \(\chi\) is less than or equal to 0 for diamagnetic materials. Hence, magnetic suspectibility is small and negative for diamagnetic materials.
PHXII05:MAGNETISM and MATTER
360485
In a permanent magnet at room temperature
1 The individual molecules have non-zero magnetic moment which are all perfectly aligned
2 Magnetic moment of each molecule is zero
3 Domains are all perfectly aligned
4 Domains are partially aligned
Explanation:
In a permanent magnet at room temperature domains of a magnet are partially aligned due to thermal agitation.
NCERT Exemplar
PHXII05:MAGNETISM and MATTER
360486
If a magnetic substance is kept in a magnetic field, then which of the following substance is thrown out?
1 Ferromagnetic
2 Paramagnetic
3 Antiferromagnetic
4 Diamagnetism
Explanation:
Diamagnetic substances are repelled by magnetic field.
360483
Assertion : Diamagnetic materials can exhibit magnetism. Reason : Diamagnetic materials have permanent magnetic dipole moment .
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Diamagnetic materials are typically repelled by magnetic fields. When placed in a magnetic field, they exhibit a weak form of magnetism called diamagnetism. Diamagnetic materials have no permanent magnetic dipole moment; instead, they develop induced magnetic moments in the opposite direction to the applied magnetic field. These induced moments are quite weak, and they do not result in a net attraction to the magnetic field. Therefore, diamagnetic materials do not exhibit magnetism in the same way that ferromagnetic or paramagnetic materials do. Diamagnetic materials do not have a permanent magnetic dipole moment. Instead, they develop temporary, induced magnetic moments when placed in an external magnetic field. These induced moments are opposite in direction to the applied field and are a result of the rearrangement of electron orbits within the atoms or molecules of the material. When the external magnetic field is removed, the induced moments vanish. Diamagnetic materials do not retain any permanent magnetism. The reason provided is not accurate, as it incorrectly states that diamagnetic materials have a permanent magnetic dipole moment. In reality, diamagnetic materials only exhibit weak, temporary diamagnetism when subjected to an external magnetic field. So, correct option is (3)
AIIMS - 2006
PHXII05:MAGNETISM and MATTER
360484
For diamagnetic materials, magnetic susceptibility is
1 Small and negative
2 Small and positive
3 Large and negative
4 Large and positive
Explanation:
Magnetic suspectibility is given by \(\chi=\mu_{r}-1\) where, \(\mu_{r}\) is the relative magnetic permeability Since, \(\mu_{r}\) for diamagnetic materials is less than or equal to 1 , therefore \(\chi\) is less than or equal to 0 for diamagnetic materials. Hence, magnetic suspectibility is small and negative for diamagnetic materials.
PHXII05:MAGNETISM and MATTER
360485
In a permanent magnet at room temperature
1 The individual molecules have non-zero magnetic moment which are all perfectly aligned
2 Magnetic moment of each molecule is zero
3 Domains are all perfectly aligned
4 Domains are partially aligned
Explanation:
In a permanent magnet at room temperature domains of a magnet are partially aligned due to thermal agitation.
NCERT Exemplar
PHXII05:MAGNETISM and MATTER
360486
If a magnetic substance is kept in a magnetic field, then which of the following substance is thrown out?
1 Ferromagnetic
2 Paramagnetic
3 Antiferromagnetic
4 Diamagnetism
Explanation:
Diamagnetic substances are repelled by magnetic field.
