WAEC Physics 2013 Objective — Question 15
Question 15 of 50 from the West African Examinations Council (WAEC) Physics 2013 Objective paper, with the correct answer and a full explanation.
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The velocity ratio of an inclined plane
- A. increases with increase in the angle of inclination
- B. increases with decrease in the angle of inclinationCorrect
- C. decreases with decrease in the angle of inclination
- D. is independent of the angle
Explanation
V.R = 1/sinθ. As θ decreases (first quadrant, θ≤90°), sinθ decreases, so V.R increases. Thus V.R increases with a decrease in the angle of inclination.
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