3.3 Principle of superposition of waves and formation of stationary waves

    Cards (30)

    • What is the principle of superposition of waves?
      Displacements of waves add
    • What happens to the amplitude in constructive interference?
      Increases
    • What is the effect on wave intensity during destructive interference?
      Decreases
    • The principle of superposition of waves results in interference, which can be constructive or destructive
    • Constructive interference occurs when the crests and troughs of waves align.

      True
    • Stationary waves form when two progressive waves with the same frequency and amplitude travel in opposite directions.
    • What conditions are necessary for the formation of stationary waves?
      Same frequency and amplitude
    • The principle of superposition of waves states that when two or more waves meet, their displacements add together
    • Constructive interference occurs when waves add together, resulting in a larger amplitude.

      True
    • Destructive interference leads to a decrease in wave intensity.
      True
    • Match the term with its description:
      Nodes ↔️ Points of no displacement
      Antinodes ↔️ Points of maximum displacement
    • In closed tubes, only odd harmonics can form because one end is a node.
      True
    • What type of interference results in nodes in stationary waves?
      Destructive
    • In acoustic instruments, stationary sound waves form resonant frequencies
    • The length of a guitar string determines the frequencies at which stationary waves form to produce distinct musical notes.
      True
    • The principle of superposition of waves states that when two or more waves meet, their displacements add together
    • Destructive interference occurs when the crest of one wave meets the crest of another.
      False
    • Steps for wave interference according to the superposition principle:
      1️⃣ Two or more waves meet
      2️⃣ Their displacements add together
      3️⃣ Constructive or destructive interference occurs
    • What are the two types of interference that result from the superposition principle?
      Constructive and destructive
    • What determines whether waves reinforce or cancel each other out in interference?
      Relative phases
    • What are nodes in a stationary wave?
      Points of no displacement
    • Match the type of tube with its wave characteristics:
      Open tube ↔️ Both ends are antinodes
      Closed tube ↔️ One end is a node
    • What are the two types of wave interference resulting from the principle of superposition?
      Constructive and destructive
    • Destructive interference occurs when the crest of one wave meets the trough of another, resulting in a smaller amplitude
    • What conditions are required for the formation of stationary waves?
      Same frequency, opposite direction
    • In open tubes, both ends are antinodes
    • Why do open tubes allow multiple harmonics to form?
      Both ends are antinodes
    • Antinodes in stationary waves are points of maximum displacement due to constructive interference.
      True
    • How do stationary waves heat food in microwave ovens?
      Resonant absorption
    • In optical cavities, stationary waves amplify laser light
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