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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): Bohr postulated that the electrons in stationary orbits around the nucleus do not radiate.
Reason (R): According to classical Physics, all moving electrons radiate.
- 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 'B'. Can you explain this answer?
Most Upvoted Answer
Directions : In the following questions, A statement of Assertion (A)...
Assertion and Reason Overview
The question involves analyzing the assertions made by Bohr about electron behavior and the classical physics perspective on electron radiation.
Assertion (A):
Bohr proposed that electrons in stationary orbits around the nucleus do not radiate energy. This is a fundamental tenet of Bohr's model of the atom, which introduced quantized energy levels.
Reason (R):
According to classical physics, any charged particle in motion, such as an electron, should radiate energy in the form of electromagnetic radiation. This would lead to a loss of energy and result in the electron spiraling into the nucleus, which contradicts the stability of atoms.
Analysis of the Statements
- True Nature of A:
- Bohr's assertion is indeed true. His model successfully explains the stability of atoms by introducing the concept of stationary orbits where electrons do not radiate energy.
- True Nature of R:
- The reason is also true in the context of classical physics. According to classical theories, electrons in motion should emit radiation due to acceleration.
Explanation of the Correct Choice
- Option B - Both A and R are true but R is NOT the correct explanation of A:
- While both assertions are true, the reason does not serve as a correct explanation for Bohr's postulate. Bohr's model was a breakthrough that specifically addressed the limitations of classical physics, providing a new framework for understanding atomic structure.
Conclusion
Thus, the correct choice is option B, as both statements are valid, but the classical reasoning does not adequately explain the Bohr model's assertion regarding stationary orbits.
The question involves analyzing the assertions made by Bohr about electron behavior and the classical physics perspective on electron radiation.
Assertion (A):
Bohr proposed that electrons in stationary orbits around the nucleus do not radiate energy. This is a fundamental tenet of Bohr's model of the atom, which introduced quantized energy levels.
Reason (R):
According to classical physics, any charged particle in motion, such as an electron, should radiate energy in the form of electromagnetic radiation. This would lead to a loss of energy and result in the electron spiraling into the nucleus, which contradicts the stability of atoms.
Analysis of the Statements
- True Nature of A:
- Bohr's assertion is indeed true. His model successfully explains the stability of atoms by introducing the concept of stationary orbits where electrons do not radiate energy.
- True Nature of R:
- The reason is also true in the context of classical physics. According to classical theories, electrons in motion should emit radiation due to acceleration.
Explanation of the Correct Choice
- Option B - Both A and R are true but R is NOT the correct explanation of A:
- While both assertions are true, the reason does not serve as a correct explanation for Bohr's postulate. Bohr's model was a breakthrough that specifically addressed the limitations of classical physics, providing a new framework for understanding atomic structure.
Conclusion
Thus, the correct choice is option B, as both statements are valid, but the classical reasoning does not adequately explain the Bohr model's assertion regarding stationary orbits.
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Community Answer
Directions : In the following questions, A statement of Assertion (A)...
Bohr postulated that electrons in stationary orbits around the nucleus do not radiate. This is true.
According to classical Physics, the moving electrons radiate only when they jump from a higher energy orbit to the lower energy orbit. So, the reason is false.
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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): Bohr postulated that the electrons in stationary orbits around the nucleus do not radiate.Reason (R): According to classical Physics, all moving electrons radiate.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 'B'. 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): Bohr postulated that the electrons in stationary orbits around the nucleus do not radiate.Reason (R): According to classical Physics, all moving electrons radiate.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 'B'. 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): Bohr postulated that the electrons in stationary orbits around the nucleus do not radiate.Reason (R): According to classical Physics, all moving electrons radiate.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 'B'. 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): Bohr postulated that the electrons in stationary orbits around the nucleus do not radiate.Reason (R): According to classical Physics, all moving electrons radiate.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 'B'. 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): Bohr postulated that the electrons in stationary orbits around the nucleus do not radiate.Reason (R): According to classical Physics, all moving electrons radiate.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 'B'. 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): Bohr postulated that the electrons in stationary orbits around the nucleus do not radiate.Reason (R): According to classical Physics, all moving electrons radiate.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 'B'. 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): Bohr postulated that the electrons in stationary orbits around the nucleus do not radiate.Reason (R): According to classical Physics, all moving electrons radiate.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 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12.
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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): Bohr postulated that the electrons in stationary orbits around the nucleus do not radiate.Reason (R): According to classical Physics, all moving electrons radiate.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 'B'. 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): Bohr postulated that the electrons in stationary orbits around the nucleus do not radiate.Reason (R): According to classical Physics, all moving electrons radiate.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 'B'. 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): Bohr postulated that the electrons in stationary orbits around the nucleus do not radiate.Reason (R): According to classical Physics, all moving electrons radiate.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 'B'. 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): Bohr postulated that the electrons in stationary orbits around the nucleus do not radiate.Reason (R): According to classical Physics, all moving electrons radiate.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 'B'. Can you explain this answer? tests, examples and also practice Class 12 tests.
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