MCQ
ध्वनि की तीव्रता की इकाई है।
  • $\frac{W}{m^2}$
  • B
    $\frac{m^2}{W}$
  • C
    $\frac{m}{W}$
  • D
    $\frac{W}{m}$

Answer

Correct option: A.
$\frac{W}{m^2}$
a

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