A sound wave having frequency of 300 Hz is travelling in an unknown medium. Its wavelength is not known. It travels a distance equal to 150 times its wavelength in time t. The value of t is:
- A. 0.5 s ✓
- B. 1 s
- C. 1.5 s
- D. 2 s
Correct Answer: A. 0.5 s
Explanation
Using v = f \lambda and d = vt, we have 150 \lambda = (300 \lambda)t. Solving for t gives 150/300 = 0.5 s[cite: 1].
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