General Knowledge · General Studies
अल्ट्रासॉनिक तरंगों की आवृत्ति आमतौर पर होती है:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 15:3
- 220 kHz से अधिक✓
- 320-20000 Hz
- 43900 Å - 7600 Å
सही उत्तर देखें
20 kHz से अधिक
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