Physics · Acoustics
पराश्रव्य (अल्ट्रासोनिक) तरंगें वे ध्वनि तरंगें होती हैं जिन्हें मनुष्य:
- 1केवल बाल्यावस्था में सुन सकता है
- 2केवल उच्च वायुमंडलीय दाब में सुन सकता है
- 3नहीं सुन सकता है✓
- 4आसानी से सुन सकता है
सही उत्तर देखें
नहीं सुन सकता है
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