Self Studies
Self Studies
Self Studies
Self Studies

Sound Test - 61

Result Self Studies

Sound Test - 61
  • Score

    -

    out of -
  • Rank

    -

    out of -
TIME Taken - -
Self Studies

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Self Studies Self Studies
Weekly Quiz Competition
  • Question 1
    1 / -0
    On a slinky, which of the following is produced?
    Solution
    When a wave travels along the slinky, then each turn [coil] of the slinky moves back and forth by a small distance in the direction of the wave. Since the particles of the medium are moving back and forth in the direction of the wave, the wave which travels across the slinky is a longitudinal wave, not a transverse. As in a transverse wave, the particle moves sideways.
  • Question 2
    1 / -0
    Longitudinal waves cannot travel through
    Solution
    Longitudinal waves are like mechanical waves which need the medium to propagate. These waves cannot travel through a vacuum. A vacuum is an area where there are no liquids, gases or solids of any kind. That is, there is absolutely in a vacuum. If there are no substances, then there are no particles for the sound waves to vibrate, which means the sound waves cannot travel.
  • Question 3
    1 / -0
    The velocity of sound is highest in
    Solution
    velocity of sound is highest in solids and glass being a solid among given options posses highest velocity of sound.
    so the answer is C.
  • Question 4
    1 / -0
    The persistence of sound in a closed enclosure, due to continuous reflections at the walls, even after the source has stopped producing sound is known as
    Solution
    Reverberation is the phenomenon of persistence of sound in a closed enclosure, due to multiple reflections of sound from the walls, even after the source has stopped producing sound. The intensity of sound gets reduced after each reflection.
  • Question 5
    1 / -0
    Which of the following is independent of the remaining three for a sound wave?
    Solution
    Frequency, wavelength and velocity are related by the equation,
    $$Velocity=Frequency\times Wavelength$$ 
    $$\Rightarrow v = \nu \times \lambda$$

    So amplitude is independent of the remaining three.

    Hence, D is the correct option.
  • Question 6
    1 / -0
    The grandparents and parents of a two-year-old girl are playing with her in a room. A sound source produces a $$28\ kHz$$ sound. Who in the room is most likely to hear the sound?
    Solution
    The frequency range of hearing in infants is more than in adults. As the infant gets mature, this range decreases. So two-year girl will be more likely to hear that sound.
  • Question 7
    1 / -0
    Which of the following characteristics of sound will change if there is a change in its waveform ?
    Solution
    Quality or timbre of sound will change due to a change in it's waveform.
  • Question 8
    1 / -0
    All waves can be classified into two categories which are
    Solution
    All waves can be classified into two categories. They are Transverse and longitudinal waves.
    A transverse wave is a wave in which particles of the medium move in a direction perpendicular to the direction that the wave moves.
    A longitudinal wave is a wave in which particles of the medium move in a direction parallel to the direction that the wave moves
    Therefore option $$D$$ is correct 
  • Question 9
    1 / -0
    In echo cardiography (ECG) the frequency of the sound waves used is
    Solution
    Ultrasonic frequency (greater than 20 kilohertz) is used in echocardiography. For adult cardiac imaging, ultrasound waves in the range of 4–7 MHz are used (intravascular ultrasound uses frequencies as high as 30 MHz).
  • Question 10
    1 / -0
    A sound wave is generated by the howl of a wolf in the night. How would we describe the motion of a particular air molecule near the ground, a mile away from the wolf, on average (i.e. ignoring the random wandering of gas molecules)?
    Solution
    A sound wave is a longitudinal wave. In this type of wave motion, the particles of the medium oscillate about their mean or equilibrium position along the direction of propagation of the wave motion itself. The longitudinal wave travels in the form of successive compressions and rarefactions. So the air molecules will move back and forth towards the wolf.
Self Studies
User
Question Analysis

  • Correct -

  • Wrong -

  • Skipped -

My Perfomance
  • Score

    -

    out of -
  • Rank

    -

    out of -
Re-Attempt Weekly Quiz Competition
Self Studies Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Self Studies
Click on Allow to receive notifications
Allow Notification
Self Studies
Self Studies Self Studies
To enable notifications follow this 2 steps:
  • First Click on Secure Icon Self Studies
  • Second click on the toggle icon
Allow Notification
Get latest Exam Updates & FREE Study Material Alerts!
Self Studies ×
Open Now