Class VIII

Sound propagates maximum in
  1. Gas
  2. Liquid
  3. Solid
  4. All
Length of vocal cords of women is _____ men
  1. greater than
  2. less than
  3. same as
  4. slightly greater than
Speed of sound in solids is ______ the speed of sound in liquids
  1. same as
  2. greater than
  3. less than
  4. sometimes greater and sometimes less than
The sound above ___ is physically painful
  1. 20 dB
  2. 40 dB
  3. 60 dB
  4. 80 dB
To and fro or back and forth motion of an object is termed as _____.
  1. frequency
  2. amplitude
  3. vibration
  4. time period
Time Elapsed

HR : MIN : SEC
Question Answered
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Score out of 100
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