Class 8 Exam > Class 8 Questions > Which of the following statements is NOT true...
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Which of the following statements is NOT true?
- a)Friction can be reduced by converting sliding friction into rolling friction.
- b)Friction in air and water can be reduced by streamlining the shape of the objects.
- c)A polished surface will have less friction.
- d)Friction can be reduced to zero.
Correct answer is option 'D'. Can you explain this answer?
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Which of the following statements is NOT true?a)Friction can be reduce...
Statement (A), (B) and (C) are correct.
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Which of the following statements is NOT true?a)Friction can be reduce...
Understanding Friction
Friction is a force that opposes the relative motion between two surfaces in contact. It plays a crucial role in everyday activities, but it can also be a source of inefficiency and wear.
Why Option D is NOT True
The statement that "Friction can be reduced to zero" is incorrect for several reasons:
Conclusion
In summary, while we can reduce friction through various means, such as using smoother surfaces or lubrication, completely eliminating it is not achievable. This understanding is essential in fields like engineering and physics, where managing friction is crucial for efficiency and safety.
Friction is a force that opposes the relative motion between two surfaces in contact. It plays a crucial role in everyday activities, but it can also be a source of inefficiency and wear.
Why Option D is NOT True
The statement that "Friction can be reduced to zero" is incorrect for several reasons:
- Nature of Friction: Friction arises from the interactions between surface irregularities and the contact between the materials. As long as two surfaces are in contact, some level of friction will always exist.
- Limitations of Lubrication: Even with the use of lubricants or other methods to reduce friction, it is impossible to eliminate it completely. There will always be some microscopic contact between surfaces.
- Quantum Effects: At a fundamental level, quantum mechanics suggests that friction is inherent to the interactions of matter. Thus, achieving absolute zero friction is not feasible.
- Practical Applications: In practical applications, while we can significantly reduce friction (e.g., using ball bearings or magnetic levitation), completely removing it leads to instability and loss of control, which is not desirable in mechanical systems.
Conclusion
In summary, while we can reduce friction through various means, such as using smoother surfaces or lubrication, completely eliminating it is not achievable. This understanding is essential in fields like engineering and physics, where managing friction is crucial for efficiency and safety.
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Which of the following statements is NOT true?a)Friction can be reduced by converting sliding friction into rolling friction.b)Friction in air and water can be reduced by streamlining the shape of the objects.c)A polished surface will have less friction.d)Friction can be reduced to zero.Correct answer is option 'D'. Can you explain this answer?
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Which of the following statements is NOT true?a)Friction can be reduced by converting sliding friction into rolling friction.b)Friction in air and water can be reduced by streamlining the shape of the objects.c)A polished surface will have less friction.d)Friction can be reduced to zero.Correct answer is option 'D'. Can you explain this answer? for Class 8 2024 is part of Class 8 preparation. The Question and answers have been prepared according to the Class 8 exam syllabus. Information about Which of the following statements is NOT true?a)Friction can be reduced by converting sliding friction into rolling friction.b)Friction in air and water can be reduced by streamlining the shape of the objects.c)A polished surface will have less friction.d)Friction can be reduced to zero.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 8 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is NOT true?a)Friction can be reduced by converting sliding friction into rolling friction.b)Friction in air and water can be reduced by streamlining the shape of the objects.c)A polished surface will have less friction.d)Friction can be reduced to zero.Correct answer is option 'D'. Can you explain this answer?.
Which of the following statements is NOT true?a)Friction can be reduced by converting sliding friction into rolling friction.b)Friction in air and water can be reduced by streamlining the shape of the objects.c)A polished surface will have less friction.d)Friction can be reduced to zero.Correct answer is option 'D'. Can you explain this answer? for Class 8 2024 is part of Class 8 preparation. The Question and answers have been prepared according to the Class 8 exam syllabus. Information about Which of the following statements is NOT true?a)Friction can be reduced by converting sliding friction into rolling friction.b)Friction in air and water can be reduced by streamlining the shape of the objects.c)A polished surface will have less friction.d)Friction can be reduced to zero.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 8 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is NOT true?a)Friction can be reduced by converting sliding friction into rolling friction.b)Friction in air and water can be reduced by streamlining the shape of the objects.c)A polished surface will have less friction.d)Friction can be reduced to zero.Correct answer is option 'D'. Can you explain this answer?.
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