Class XI

What type of sound waves can propagate in solids ?
  1. Longitudinal only
  2. Transverse only
  3. Either longitudinal or transverse
  4. Either longitudinal or transverse
In longitudinal waves, the particles vibrate in a ___________ direction of propagation
  1. parallel
  2. perpendicular
  3. curved
  4. both parallel and perpendicular
In which of the following, speed of the sound is maximum:
  1. air
  2. water
  3. steel
  4. kerosene
The SI unit of wavelength is
  1. metre(b) s-1
  2. metre/second
  3. Hertz
  4. s-1
The time taken to complete one oscillation is called _________.
  1. time period
  2. velocity
  3. frequency
  4. wavelength
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