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Attempt either (I) with all sub parts or (II) with all sub parts from the following two questions-
The speed of sound in air is 340 m/s. If a sound wave has a frequency of 1700 Hz, what is its wavelength?
An object moving at a speed greater than that of sound is said to be moving at
Explain how 'echo' is produced.
What should be the minimum distance between the listener and the reflector to hear an echo of sound propagating with a speed v m s⁻¹?
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