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Sound Test - 63...

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  • Question 1
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    Which property in a medium changes, when a longitudinal wave passes through it

  • Question 2
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    Assertion - Sound wave is an example of longitudinal wave.
    Reason - In longitudinal waves, the constituents of the medium oscillate perpendicular to the direction of wave propagation.

  • Question 3
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    A longitudinal wave is a wave that consists of oscillations that are 

  • Question 4
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    A transverse wave is a wave that consists of oscillations that are 

  • Question 5
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    The terms pitch, quality and loudness of sound are associated with the following, respectively-

  • Question 6
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    The tip of a pencil attached to a spring oscillates vertically, thereby etching an overlapping straight line on a white sheet of paper. The length of this line is $$5 \ cm$$. What is the amplitude of the vibration

  • Question 7
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    The maximum displacement of a particle in a vibratory motion is known as 

  • Question 8
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    A sound wave has a speed of 200 m/s in a medium and it travels a distance of 1 m. What is the time taken by the wave to cross the medium

  • Question 9
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    A particle takes 0.01 s to complete 5 vibrations, what is its frequency

  • Question 10
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    Directions For Questions

    Ultrasonic and Infrasonic Waves: The sound having frequency between $$20$$ Hz to $$20$$ kHz is called audible sound. Human ear cannot hear sound of frequencies lying outside this range. The limits of audibility of sound vary from individual. Generally the upper limit decreases with increase of age of individual; usually and people can not hear sound of frequency more than $$15$$ kHz.
    Sound of frequencies below $$20$$ Hz are called infrasonics, while frequencies beyond $$20$$ kHz are called ultrasonics. Ultrasonics can be heard by dogs, cat, bats, etc. Bats detect the path by means of ultrasonics. Ultrasonics can be used for diagnosis of turnover and other abnormalities within our body. This is known as ultrasonography. Ultrasonics are used to cure various diseases and to measure depth of oceans to detect submarines.

    ...view full instructions

    Ultrasonics can be detected by:

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