WAEC Physics 2025 Objective — Question 41
Question 41 of 51 from the West African Examinations Council (WAEC) Physics 2025 Objective paper, with the correct answer and a full explanation.
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When the pressure in oil is increased, the viscosity of the oil would be
- A. IncreasedCorrect
- B. Decreased
- C. Constant
- D. Increased then decreased
Explanation
Increasing pressure in a liquid forces its molecules closer together, increasing resistance to flow, i.e. increasing viscosity.
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