जो एक हवा में ध्वनि तरंगों � – McqOptions

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1.	जो एक हवा में ध्वनि तरंगों द्वारा उत्पादित नहीं है ?
A.	ध्रुवीकरण
B.	विवर्तन
C.	अपवर्तन
D.	प्रतिबिंब
Answer» B. विवर्तन

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