Science · Science
अल्ट्रासॉनिक की आवृत्ति रेंज क्या है?
- 120,000 Hz से अधिक✓
- 220 Hz से 20,000 Hz
- 320 Hz से 2000 Hz
- 420 Hz से कम
सही उत्तर देखें
20,000 Hz से अधिक
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