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"In a sound wave, a displacement node is...

"In a sound wave, a displacement node is a pressure antinode and vice versa'. Why?

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To understand why in a sound wave a displacement node is a pressure antinode and vice versa, we can break down the concepts of displacement, pressure, nodes, and antinodes step by step. ### Step-by-Step Solution: 1. **Understanding Nodes and Antinodes**: - A **node** is a point in a standing wave where the displacement of the medium is at a minimum (zero). In sound waves, this means that the particles of the medium do not move from their equilibrium position at these points. - An **antinode** is a point where the displacement is at a maximum. This is where the particles of the medium oscillate with the greatest amplitude. ...
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Explain why (or how) : (a) In a sound wave, a displacement node is a pressure antinode and vice-versa, (b) Bats can ascertain distances, directions, nature and size of obstacles without any eyes, (c) a violin note and sitar note may have the same frequency, yet we can distinguish between the two notes, (d) Solids can support both longitudinal and transverse waves, but only longitudinal waves can propagate in gases, (e) The shape of pulse gets distorted during propagation in a dispersive medium.

(A): In a longitudinal stationary wave a displacement node coincides with a pressure anti node. (R): Restoring force is maximum at node and minimum at anti node.

Knowledge Check

  • S_(1) : Source and observer both are stationary and wind is blowing in a direction from source to observer then observer detects an apparent increase in frequency. S_(2) : Beat frequency is defined as the difference of frequency of two sources. S_(3) : Pressure node is always a displacement node and pressure antinode is always a displacement antinode.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
    C
    If assertion is true but reason is false.
    D
    If both assertion and reason are false.

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    Standing sound waves are produced in a pipe that is 0.8 m long, open at one end, and closed at th other. For the fundamental and first two overtone, where along the pipe (measured from the closed end) are (a) the displacemental antinodes (b) the pressure antinodes.

    In a standing wave, node is a point of

    Along the straight line joining two consecutive displacement nodes in a pure stationary sound wave at different points

    In stationary waves, distance between a node and its nearest antinode is 20 cm . The phase difference between two particles having a separation of 60 cm will be

    (A): A person hears maximum sound at displacement anti node (or) pressure node. (B) : Two organ pipes of same length open at both ends produce sound of different pitch if their radii are different. (C): If oil of density higher than water is filled in place of water in a resonance tube, its frequency remain unchanged.

    A sound wave may be considered either as a displacement wave or as a pressure wave . When reflection takes place from as a rigid wall , what phase change do you except in its displacement representation and in its pressure representation?

    What is the frequency of a sound wave with a displacement amplitude 1.1 xx 10^(-5)m and pressure amplitude "28 N/m"^2?

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