A bat moving at 10 ms–1 towards a wall sends a sound signal of 8000 Hz towards it. On reflection it hears a sound of frequency f. The value of f in Hz is close to (speed of sound = 320 ms–1)


A bat moving at $10 \mathrm{~ms}^{-1}$ towards a wall sends a sound signal of $8000 \mathrm{~Hz}$ towards it. On reflection it hears a sound of frequency $f$. The value of $f$ in $\mathrm{Hz}$ is close to (speed of sound $=320 \mathrm{~ms}^{-1}$ )

  1. 8516

  2. 8258

  3. 8424

  4. 8000

Correct Option: 1


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