Class 12 Exam > Class 12 Questions > Directions: In the following questions, A st...
Start Learning for Free
Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion (A): Ferromagnetic substances become paramagnetic beyond Curie temperature.
Reason (R): Domains are destroyed at high temperature.
- a)Both A and R are true and R is the correct explanation of A
- b)Both A and R are true but R is NOT the correct explanation of A
- c)A is true but R is false
- d)A is false and R is true
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Directions: In the following questions, A statement of Assertion (A) ...
From Curie Weiss law,
As temperature increases beyond Curie temperature, susceptibility decreases and the ferromagnetic substances become paramagnetic. So, the assertion is true. Paramagnetic substance has no magnetic domain. At a very high temperature, the domains of ferromagnetic substance get destroyed and the substance transforms into paramagnetic substance. So, the reason is also true and properly explains the assertion.
Free Test
FREE
| Start Free Test |
Community Answer
Directions: In the following questions, A statement of Assertion (A) ...
Assertion (A): Ferromagnetic substances become paramagnetic beyond Curie temperature.
Reason (R): Domains are destroyed at high temperature.
The correct answer is option 'A' - Both A and R are true and R is the correct explanation of A.
Explanation:
Ferromagnetism is a property exhibited by certain materials where they possess a strong magnetic response even in the absence of an external magnetic field. This property is due to the alignment of atomic magnetic moments in the material.
Curie temperature:
The Curie temperature (Tc) is the temperature above which ferromagnetic materials lose their permanent magnetic properties and become paramagnetic. At temperatures below the Curie temperature, ferromagnetic materials exhibit strong magnetic behavior due to the alignment of atomic magnetic moments in the same direction, forming magnetic domains. However, above the Curie temperature, the ferromagnetic materials lose their magnetic properties and become paramagnetic.
Explanation of Assertion (A):
Ferromagnetic substances become paramagnetic beyond the Curie temperature. This means that their magnetic properties diminish as the temperature increases beyond the Curie temperature. This assertion is true.
Explanation of Reason (R):
The reason provided states that domains are destroyed at high temperature. This means that the alignment of atomic magnetic moments within the domains is disrupted, leading to the loss of ferromagnetic properties. At high temperatures, the thermal energy is sufficient to overcome the forces that align the atomic magnetic moments. As a result, the domains break down, and the material becomes paramagnetic. This reason is also true.
Explanation of the correct answer:
Both the assertion and the reason are true. Furthermore, the reason provides a correct explanation for the assertion. The destruction of domains at high temperatures is the underlying mechanism responsible for the transition from ferromagnetism to paramagnetism beyond the Curie temperature. Therefore, option 'A' is the correct answer.
Reason (R): Domains are destroyed at high temperature.
The correct answer is option 'A' - Both A and R are true and R is the correct explanation of A.
Explanation:
Ferromagnetism is a property exhibited by certain materials where they possess a strong magnetic response even in the absence of an external magnetic field. This property is due to the alignment of atomic magnetic moments in the material.
Curie temperature:
The Curie temperature (Tc) is the temperature above which ferromagnetic materials lose their permanent magnetic properties and become paramagnetic. At temperatures below the Curie temperature, ferromagnetic materials exhibit strong magnetic behavior due to the alignment of atomic magnetic moments in the same direction, forming magnetic domains. However, above the Curie temperature, the ferromagnetic materials lose their magnetic properties and become paramagnetic.
Explanation of Assertion (A):
Ferromagnetic substances become paramagnetic beyond the Curie temperature. This means that their magnetic properties diminish as the temperature increases beyond the Curie temperature. This assertion is true.
Explanation of Reason (R):
The reason provided states that domains are destroyed at high temperature. This means that the alignment of atomic magnetic moments within the domains is disrupted, leading to the loss of ferromagnetic properties. At high temperatures, the thermal energy is sufficient to overcome the forces that align the atomic magnetic moments. As a result, the domains break down, and the material becomes paramagnetic. This reason is also true.
Explanation of the correct answer:
Both the assertion and the reason are true. Furthermore, the reason provides a correct explanation for the assertion. The destruction of domains at high temperatures is the underlying mechanism responsible for the transition from ferromagnetism to paramagnetism beyond the Curie temperature. Therefore, option 'A' is the correct answer.
|
Explore Courses for Class 12 exam
|
|
Top Courses for Class 12View all
Question Description
Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Ferromagnetic substances become paramagnetic beyond Curie temperature.Reason (R): Domains are destroyed at high temperature.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. 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: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Ferromagnetic substances become paramagnetic beyond Curie temperature.Reason (R): Domains are destroyed at high temperature.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. 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: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Ferromagnetic substances become paramagnetic beyond Curie temperature.Reason (R): Domains are destroyed at high temperature.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer?.
Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Ferromagnetic substances become paramagnetic beyond Curie temperature.Reason (R): Domains are destroyed at high temperature.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. 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: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Ferromagnetic substances become paramagnetic beyond Curie temperature.Reason (R): Domains are destroyed at high temperature.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. 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: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Ferromagnetic substances become paramagnetic beyond Curie temperature.Reason (R): Domains are destroyed at high temperature.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Ferromagnetic substances become paramagnetic beyond Curie temperature.Reason (R): Domains are destroyed at high temperature.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. 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.
Here you can find the meaning of Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Ferromagnetic substances become paramagnetic beyond Curie temperature.Reason (R): Domains are destroyed at high temperature.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Ferromagnetic substances become paramagnetic beyond Curie temperature.Reason (R): Domains are destroyed at high temperature.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Ferromagnetic substances become paramagnetic beyond Curie temperature.Reason (R): Domains are destroyed at high temperature.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Ferromagnetic substances become paramagnetic beyond Curie temperature.Reason (R): Domains are destroyed at high temperature.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Ferromagnetic substances become paramagnetic beyond Curie temperature.Reason (R): Domains are destroyed at high temperature.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Class 12 tests.
|
|
Explore Courses for Class 12 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup