WAEC Physics 2013 Objective — Question 32
Question 32 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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A string under tension produces a note of frequency 14 Hz. Determine the frequency when the tension is quadrupled.
- A. 14 Hz
- B. 18 Hz
- C. 28 HzCorrect
- D. 56 Hz
Explanation
Frequency f ∝ √Tension. If tension is quadrupled (4T), new frequency = √4 × original = 2×14 = 28Hz.
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