किसी संगीत यंत्र की ध्वनि � – McqOptions

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1.	किसी संगीत यंत्र की ध्वनि तीव्रता मापी जाती है -
A.	महो
B.	हैनरी
C.	लक्स
D.	डेसीबल
Answer» E.

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