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Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.


Assertion : A paramagnetic sample display greater magnetisation (for the same magnetic field) when cooled.


Reason : The magnetisation does not depend on temperature.

  • a)
    If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

  • b)
    If both the Assertion and Reason are incorrect.

  • c)
    If the Assertion is correct but Reason is incorrect.

  • d)
    If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Directions: These questions consist of two statements, each printed as...
Assertion : A paramagnetic sample display greater magnetisation (for the same magnetic field) when cooled.

Reason : The magnetisation does not depend on temperature.

The correct answer to this question is option 'd', which states that both the Assertion and Reason are incorrect. Let's analyze the Assertion and Reason statements individually to understand why this answer is correct.

Assertion: A paramagnetic sample displays greater magnetisation (for the same magnetic field) when cooled.

Reason: The magnetisation does not depend on temperature.

Explanation:

Assertion: A paramagnetic sample displays greater magnetisation (for the same magnetic field) when cooled.

Paramagnetic materials are those materials that have unpaired electrons and are weakly attracted to a magnetic field. When a paramagnetic material is placed in a magnetic field, the external magnetic field aligns the magnetic moments of the unpaired electrons in the material, causing it to become magnetized. This magnetization is directly proportional to the applied magnetic field strength.

The Assertion states that a paramagnetic sample displays greater magnetization when cooled. This statement is incorrect. Cooling a paramagnetic sample does not lead to an increase in its magnetization. The magnetization of a paramagnetic material depends on the strength of the applied magnetic field, not on its temperature. Cooling the sample does not change the number of unpaired electrons or their magnetic moments, which are the factors that determine the magnetization of a paramagnetic material.

Reason: The magnetisation does not depend on temperature.

The Reason states that the magnetization does not depend on temperature. This statement is also incorrect. The magnetization of a paramagnetic material can be affected by temperature. At higher temperatures, thermal energy disrupts the alignment of the magnetic moments, reducing the overall magnetization. As the temperature decreases, the thermal energy decreases, allowing the magnetic moments to align more easily and increasing the magnetization. Therefore, the magnetization of a paramagnetic material can vary with temperature.

In conclusion, both the Assertion and Reason statements are incorrect. The Assertion incorrectly claims that a paramagnetic sample displays greater magnetization when cooled, while the Reason incorrectly states that magnetization does not depend on temperature.
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Community Answer
Directions: These questions consist of two statements, each printed as...
A paramagnetic sample displays greater magnetisation when cooled, this is because at lower temperature, the tendency to disrupt the alignment of dipoles (due to magnetising field) decreases on account of reduced random thermal motion.
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Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.Assertion : A paramagnetic sample display greater magnetisation (for the same magnetic field) when cooled.Reason : The magnetisation does not depend on temperature.a)If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.b)If both the Assertion and Reason are incorrect.c)If the Assertion is correct but Reason is incorrect.d)If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.Correct answer is option 'D'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.Assertion : A paramagnetic sample display greater magnetisation (for the same magnetic field) when cooled.Reason : The magnetisation does not depend on temperature.a)If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.b)If both the Assertion and Reason are incorrect.c)If the Assertion is correct but Reason is incorrect.d)If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.Assertion : A paramagnetic sample display greater magnetisation (for the same magnetic field) when cooled.Reason : The magnetisation does not depend on temperature.a)If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.b)If both the Assertion and Reason are incorrect.c)If the Assertion is correct but Reason is incorrect.d)If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.Correct answer is option 'D'. Can you explain this answer?.
Solutions for Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.Assertion : A paramagnetic sample display greater magnetisation (for the same magnetic field) when cooled.Reason : The magnetisation does not depend on temperature.a)If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.b)If both the Assertion and Reason are incorrect.c)If the Assertion is correct but Reason is incorrect.d)If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12. Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free.
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