Mathematics · Acoustics
A source and a detector move away from each other in the absence of wind, each with a speed of 20 m/s with respect to the ground. If the detector detects a frequency of 1800 Hz from the source, then the original frequency of the source (taking the speed of sound in air as 340 m/s) is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 12250 Hz
- 22025 Hz✓
- 31800 Hz
- 41600 Hz
Correct answer
2025 Hz
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