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The sound insulation offered by rigid homogenous walls decreases with the increase in the thickness of the wall.

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The sound insulation offered by rigid homogenous walls decreases with the increase in the thickness of the wall.

(a) True

(b) False

This question was addressed to me in an international level competition.

This is a very interesting question from Acoustics topic in portion Acoustics and Ventilation of Construction & Building Materials

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The correct choice is (b) False

The explanation: A rigid wall is comprised of stone, brick or concrete masonry plastered on one or both sides. The sound insulation offered by rigid homogenous walls depends on the weight per unit area and it decreases with the increase in the thickness of the wall.

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