JAMB Physics 2015 Objective — Question 36
Question 36 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2015 Objective paper, with the correct answer and a full explanation.
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Which of the following is NOT affected by friction in machines?
- A. Efficiency
- B. Effort
- C. Velocity ratioCorrect
- D. Mechanical advantage
Explanation
Velocity ratio depends only on the machine's geometry, not on friction; efficiency, effort, and mechanical advantage are all affected by friction.
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