General Science- Dhwani Ki Tivrata Ke Mapak Ko Kehte Hain ?

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Q.10015: ध्वनि की तीव्रता के मापक को कहते हैं ?
A.
B.
C.
D.
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ध्वनि की तीव्रता के मापक को कहते हैं ? General Science in hindi,  Horse Power question answers in hindi pdf  Centigrade questions in hindi, Know About Decible General Science online test General Science notes in hindi quiz book    Mili Gram

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