ध्वनि तरंगों में निम्न में – McqOptions

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1.	ध्वनि तरंगों में निम्न में से कौन-सी घटना नहीं हो सकतीं -
A.	परावर्तन
B.	व्यतिकरण
C.	विवर्तन
D.	ध्रुवण
Answer» E.

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