पराश्रव्य ध्वनि की आवृत्ति क्या होती है? Paraashar Dhoni Ki Aavritti Kya Hoti Hai?
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पराश्रव्य ध्वनि की आवृत्ति क्या होती है? Paraashar Dhoni Ki Aavritti Kya Hoti Hai?

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20,000 Hz से ऊपर की ध्वनि को पराश्रव्य ध्वनि कहते हैं ।

 

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