जॉइन Examsbookउत्तर : 3. "Glass - wool"
Which is best used as a sound absorbing material in partition walls ?5
प्र: Which is best used as a sound absorbing material in partition walls ?
- 1Stone chipsfalse
- 2Steelfalse
- 3Glass - wooltrue
- 4Glass piecesfalse
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उत्तर : 3. "Glass - wool"
व्याख्या :
Answer: C) Glass - wool Explanation: Materials that do not transfer mechanical energy well. These tend to be soft,flexible, low density, and with high surface area to linear area ratios.
समान प्रश्न
Since Nithya and Suganya exchange places, so Rita’s new position is the same as Monika’s earlier position. This position is 17th from the right and 10th from the left. Therefore Number of girls in the row = (16 + 1 + 9) = 26.