Physics · Waves and Acoustics
अपश्रव्य (Infrasonic) तरंगों की आवृत्ति सीमा क्या होती है?
- 120 हर्ट्ज़ से कम✓
- 220 हर्ट्ज़ से 20,000 हर्ट्ज़ के बीच
- 320,000 हर्ट्ज़ से अधिक
- 4ठीक 100 हर्ट्ज़
सही उत्तर देखें
20 हर्ट्ज़ से कम
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