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Ch 13_SOUND_Class 8

Quiz by Deepika Sharma

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10 questions
Show answers
  • Q1
    The loudness of sound depends on:
    Question Image
    pitch
    frequency
    amplitude
    decibel
    30s
  • Q2
    An object is vibrating at 50 hertz. What is its time period?
    Question Image
    0.02 sec
    0.2 sec
    2 sec
    20 sec
    30s
  • Q3
    Humans produce voice from which organ?
    Question Image
    Voice Box
    None of the above
    Adams apple
    Throat
    30s
  • Q4
    Number of oscillations per second is called
    Question Image
    amplitude
    Hertz
    Decibels
    Frequency
    30s
  • Q5
    A sound which is pleasant to ears is called
    Question Image
    music
    noise
    none of the above
    harmony
    30s
  • Q6
    What is the speed of sound in vaccum?
    Question Image
    infinite
    340 m/sec
    zero
    3 x 10⁸ m/sec.
    30s
  • Q7
    ..............can hear the sounds of frequencies higher than 20,000Hz.
    Question Image
    Human
    Bats
    dolphins
    whales
    30s
  • Q8
    Galton whistle works on which type of waves?
    Question Image
    all of the above
    ultrasound
    infrasound
    audible
    30s
  • Q9
    A coiled organ filled with fluid
    Question Image
    stirrup
    ear drum
    anvil
    cochlea
    30s
  • Q10
    What is the sound wave used in a SONAR
    audible range
    ultrasound
    none of the above
    infrasound
    30s

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