Ek अश्रव्य Lahar Kya Hai ? एक अश्रव्य लहर क्या है ?
एक अश्रव्य लहर क्या है ?
20 हर्ट्ज सा निचा की आवृति वाली धवन तरंग,जिसे आव्स्रविया तरंग कहा जाता है |
Comments amit tiwary on 24-06-2017 harshit jain on 24-06-2017
Less then 20 Hertz waves are called infrasonic waves
20Hz sa nicha ki aavrti vali dhavni tarang , called of aavsraviya tarang |
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20 हर्ट्ज से कम तरंगें इन्फ्रासोनिक तरंगें कहलाती हैं