Explain why in a sound wave, a displacement node is a pressure antinode and vice versa.
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Answer
The node is the point in a sound wave where amplitude of cycle means dispalcement is zero. Since here we gets a compression and refractions due to this reason pressure will maximum. It called pressure antinode. While antinode is that point where amplitude will maximum means displacement will maximum. If pressure is minimum therefore this pressure point is node. So displacement node and pressure antinode point is same.
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