Question:
The difference between two audible frequencies is about 4 Hz. If one frequency and the speed of sound is 340 m/s, the other frequency might be about
The difference between two audible frequencies is about 4 Hz. If one frequency and the speed of sound is 340 m/s, the other frequency might be about
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To solve Doppler Effect problems, remember that the observed frequency changes based on relative motion, and you can add or subtract the frequency difference accordingly.
Updated On: Apr 1, 2025
- 300 Hz
- 325 Hz
- 350 Hz
- 375 Hz
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The Correct Option is D
Solution and Explanation
We can use the Doppler Effect formula to estimate the frequencies. If we know the difference in frequencies and the speed of sound, we can find the other frequency. Given that the difference is 4 Hz and the speed of sound is 340 m/s, solving for the other frequency gives:
\[
f_2 = f_1 + \Delta f
\]
where \( f_1 = 340 \, {Hz} \) and \( \Delta f = 4 \, {Hz} \). Thus, the second frequency is:
\[
f_2 = 340 + 4 = 375 \, {Hz}
\]
Hence, the correct answer is (d).
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