A detector is released from rest over a source of sound of frequency $f = 10^3 \,\,Hz$. The frequency observed by the detector at time $t$ is plotted in the graph. The speed of sound in air is $(g = 10 \,\,m/s^2)$ ... $m/s$
  • A$330$
  • B$350$
  • C$300$
  • D$310$
Medium
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