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Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion : According to law of conservation of mechanical energy, change in potential energy is equal and opposite to the change in kinetic energy.
Reason : Mechanical energy is not a conserved quantity.
- a)Both assertion and reason are true and reason is the correct explanation of assertion.
- b)Both assertion and reason are true but reason is not the correct explanation of assertion.
- c)Assertion is true but reason is false.
- d)Assertion is false but reason is true.
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Direction: In the following questions, a statement of assertion is fo...
For conservative forces the sum of kinetic and potential energies at any point remains constant throughout the motion. It does not depend upon time. This is known as law of conservation of mechanical energy. According to this rule.
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Kinetic energy + Potential energy = E = constant
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Direction: In the following questions, a statement of assertion is fo...
Understanding the Assertion
The assertion states that "According to the law of conservation of mechanical energy, change in potential energy is equal and opposite to the change in kinetic energy." This is a true statement.
- The law of conservation of mechanical energy posits that in a closed system (where only conservative forces are acting), the total mechanical energy (potential + kinetic) remains constant.
- Consequently, when an object loses potential energy (like falling), it gains an equal amount of kinetic energy, and vice versa.
Evaluating the Reason
The reason provided is, "Mechanical energy is not a conserved quantity." This statement is false.
- Mechanical energy can indeed be conserved in the absence of non-conservative forces like friction or air resistance.
- When only conservative forces are acting, the sum of potential and kinetic energy remains constant, validating the conservation of mechanical energy.
Conclusion
Given that:
- The assertion is true, as it accurately describes the relationship between potential and kinetic energy during energy transformations.
- The reason is false, as mechanical energy can be conserved under certain conditions.
The correct answer is option 'C': Assertion is true but reason is false.
This highlights the importance of understanding both the principles of mechanical energy and the conditions under which they apply.
The assertion states that "According to the law of conservation of mechanical energy, change in potential energy is equal and opposite to the change in kinetic energy." This is a true statement.
- The law of conservation of mechanical energy posits that in a closed system (where only conservative forces are acting), the total mechanical energy (potential + kinetic) remains constant.
- Consequently, when an object loses potential energy (like falling), it gains an equal amount of kinetic energy, and vice versa.
Evaluating the Reason
The reason provided is, "Mechanical energy is not a conserved quantity." This statement is false.
- Mechanical energy can indeed be conserved in the absence of non-conservative forces like friction or air resistance.
- When only conservative forces are acting, the sum of potential and kinetic energy remains constant, validating the conservation of mechanical energy.
Conclusion
Given that:
- The assertion is true, as it accurately describes the relationship between potential and kinetic energy during energy transformations.
- The reason is false, as mechanical energy can be conserved under certain conditions.
The correct answer is option 'C': Assertion is true but reason is false.
This highlights the importance of understanding both the principles of mechanical energy and the conditions under which they apply.
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Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : According to law of conservation of mechanical energy, change in potential energy is equal and opposite to the change in kinetic energy.Reason : Mechanical energy is not a conserved quantity.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'C'. Can you explain this answer? for Class 9 2025 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : According to law of conservation of mechanical energy, change in potential energy is equal and opposite to the change in kinetic energy.Reason : Mechanical energy is not a conserved quantity.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 9 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : According to law of conservation of mechanical energy, change in potential energy is equal and opposite to the change in kinetic energy.Reason : Mechanical energy is not a conserved quantity.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'C'. Can you explain this answer?.
Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : According to law of conservation of mechanical energy, change in potential energy is equal and opposite to the change in kinetic energy.Reason : Mechanical energy is not a conserved quantity.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'C'. Can you explain this answer? for Class 9 2025 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : According to law of conservation of mechanical energy, change in potential energy is equal and opposite to the change in kinetic energy.Reason : Mechanical energy is not a conserved quantity.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 9 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : According to law of conservation of mechanical energy, change in potential energy is equal and opposite to the change in kinetic energy.Reason : Mechanical energy is not a conserved quantity.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'C'. Can you explain this answer?.
Solutions for Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : According to law of conservation of mechanical energy, change in potential energy is equal and opposite to the change in kinetic energy.Reason : Mechanical energy is not a conserved quantity.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 9.
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Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : According to law of conservation of mechanical energy, change in potential energy is equal and opposite to the change in kinetic energy.Reason : Mechanical energy is not a conserved quantity.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'C'. Can you explain this answer?, a detailed solution for Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : According to law of conservation of mechanical energy, change in potential energy is equal and opposite to the change in kinetic energy.Reason : Mechanical energy is not a conserved quantity.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : According to law of conservation of mechanical energy, change in potential energy is equal and opposite to the change in kinetic energy.Reason : Mechanical energy is not a conserved quantity.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : According to law of conservation of mechanical energy, change in potential energy is equal and opposite to the change in kinetic energy.Reason : Mechanical energy is not a conserved quantity.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Class 9 tests.
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