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    Physics
    Grade-9
    Easy

    Question

    Which of the following types of waves superimpose?

    1. Light waves
    2. Sound waves
    3. Water waves
    4. All of these

    Hint:

    For all linear systems, the principle of superposition states that the net response caused by two or more stimuli is the sum of the responses that would have been caused by each stimulus individually. 

    The correct answer is: All of these

      Light waves from two coherent sources superimpose at a point.
      A stereo has at least two speakers that create sound waves, and waves can reflect from walls. All these waves superimpose.
      If two objects bob up and down with the same frequency at two different points, then two sets of concentric circular waves will be produced on the surface of the water. These concentric waves will interfere with each other as they travel across the surface of the water.
      Hence, all three waves are able to superimpose. Therefore (D) all of the above is the right answer.

      Related Questions to study

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      The combination of two or more overlapping waves is called _________.

      1. Reflection
      2. Construction
      3. Superposition
      4. Resonance

      The combination of two or more overlapping waves is called _________.

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      2. Construction
      3. Superposition
      4. Resonance
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      ________ can’t occupy the same space at the same instant of time.

      1. Two objects
      2. Two waves
      3. Two pulses
      4. Two vibrations

      ________ can’t occupy the same space at the same instant of time.

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      2. Two waves
      3. Two pulses
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      In a longitudinal wave _______ and _______ are generated.

      1. Crest, hills
      2. Troughs, valleys
      3. Compression, rarefaction
      4. Crest, trough

      In a longitudinal wave _______ and _______ are generated.

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      2. Troughs, valleys
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      In a transverse wave ______ and _______ are generated.

      1. Crest, hills
      2. Troughs, valleys
      3. Compression, rarefaction
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      In a transverse wave ______ and _______ are generated.

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      Select the incorrect statement(s) from the following.
      I. A simple harmonic motion is necessarily periodic.
      II. A simple harmonic motion may be oscillatory
      III. An oscillatory motion is necessarily periodic

      1. I only
      2. I and II
      3. II and III
      4. I and III

      Select the incorrect statement(s) from the following.
      I. A simple harmonic motion is necessarily periodic.
      II. A simple harmonic motion may be oscillatory
      III. An oscillatory motion is necessarily periodic

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      The phase (at a time t) of a particle in simple harmonic motion tells:

      1. Neither the position of the particle nor its direction of motion at time t
      2. Both the position and direction of motion of the particle at time t
      3. Only the direction of motion of the particle at time t
      4. Only the position of the particle at time t

      The phase (at a time t) of a particle in simple harmonic motion tells:

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      2. Both the position and direction of motion of the particle at time t
      3. Only the direction of motion of the particle at time t
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      The period of vibration for a spring block system of spring constant k is:

      1. T = 2π√(k/m)
      2. T = 2π√(m/k)
      3. T = π√(k/m)
      4. T = π√(m/k)

      The period of vibration for a spring block system of spring constant k is:

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      1. T = 2π√(k/m)
      2. T = 2π√(m/k)
      3. T = π√(k/m)
      4. T = π√(m/k)
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      For the horizontal simple harmonic motion of a spring-block system, the elastic force is:

      1. Maximum at the extreme position
      2. Maximum at mean position
      3. Constant throughout the motion
      4. Cannot be predicted

      For the horizontal simple harmonic motion of a spring-block system, the elastic force is:

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      2. Maximum at mean position
      3. Constant throughout the motion
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      Which one of the following forces doesn't act on the spring and block system?

      1. Elastic force
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      3. Gravitational force
      4. Tension force

      Which one of the following forces doesn't act on the spring and block system?

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      The time period of oscillations of spring and block system doesn’t depend upon:

      1. Spring constant
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      The time period of oscillations of spring and block system doesn’t depend upon:

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      Match the following with the correct response.
      1. A moving disturbance A. Mechanical waves
      2. Propagation require material medium B. Oscillatory motion
      3. Particles vibrate perpendicular to the   C. Transverse waves direction of wave propagation
      4. Back and forth motion D. Wave

      1. 1-B, 2-D, 3-A, 4-C
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      1. A moving disturbance A. Mechanical waves
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      Light waves are _____ but not _____ in nature.

      1. Mechanical, transverse
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      In vacuum but not in a medium

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      In which of the following media can non-mechanical waves travel?

      1. In a medium but not in a vacuum
      2. Neither in a medium nor a vacuum
      3. In a vacuum as well as in a medium
      4. In vacuum but not in a medium

      In which of the following media can non-mechanical waves travel?

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      2. Neither in a medium nor a vacuum
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      Mechanical transverse waves cannot travel through:

      1. Solids
      2. Liquids
      3. Gas
      4. It can travel through all the above

      Mechanical transverse waves cannot travel through:

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      1. Solids
      2. Liquids
      3. Gas
      4. It can travel through all the above
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