PDF chapter test TRY NOW
1. If a sound wave travels with a frequency of \(1.25 ×\) \(Hz\) at \(344\), the wavelength will be __________.
2. The sound waves are reflected from an obstacle into the same medium from which they were incident. Which of the following changes?
3. Velocity of sound in the atmosphere of a planet is \(500\) \(m/s\). The minimum distance between the sources of sound and the obstacle to hear the echo, in point is __________.
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