ధ్వని తీవ్రత ను దేనితో కొల – McqOptions

MCQOPTIONS

1.	ధ్వని తీవ్రత ను దేనితో కొలుస్తారు ?
A.	కేండిల
B.	ల్యుమేన్
C.	బెల్
D.	జౌళ్
Answer» D. జౌళ్

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