The sound insulation of plastered solid brick masonry walls varies as __________(a) Weight per unit volume(b) Weight per unit area(c) Log of weight per unit volume(d) Log of weight per unit areaI had been asked this question in a national level competition.The question is from Acoustics topic in section Acoustics and Ventilation of Construction & Building Materials

The sound insulation of plastered solid brick masonry walls varies as

1.	The sound insulation of plastered solid brick masonry walls varies as __________(a) Weight per unit volume(b) Weight per unit area(c) Log of weight per unit volume(d) Log of weight per unit areaI had been asked this question in a national level competition.The question is from Acoustics topic in section Acoustics and Ventilation of Construction & Building Materials
Answer» CORRECT option is (d) Log of weight per unit AREA Best explanation: The SOUND insulation of plastered solid BRICK masonry walls varies as the log of weight per unit area. The sound insulation of all the other non-porous homogeneous rigid partitions varies in the same way.

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