The frequency depends on , the source, the medium, A wave travels at V = 200 cm/s and f=100 Hz. A point A, away 4 cm from the source, vibrates in:, phase, anti phase, a microphone M2 is moved away from M1 with a distance 17 cm, such that the 2 waveforms are in anti phase for the first time. the speed of propagation of sound in air is : (f= 1000 Hz), 340 m/s, 345 m/s.

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