Class IX

The time taken to complete one oscillation is called .
  1. Time period
  2. Velocity
  3. Frequency
  4. Wavelength
 In gases a sound wave is
  1. Transverse only
  2. Longitudinal only
  3. Both Transverse and Longitudinal
  4. Neither Transverse Nor Longitudinal
Speed (v) abs wavelength ( �) and the frequency (v) of sound are related as
  1. λ= v X v
  2. v= λ X v
  3. v= λ X v
  4. v= λ / v
  Pitch of the wave is measured in terms of
  1. Amplitude of the wave
  2. Frequency of the wave
  3. Speed of the wave
  4. Time period of the wave
 In longitudinal waves , the particles vibrate in a direction of propagation
  1. Parallel
  2. Perpendicular
  3. Curved
  4. Both parallel and perpendicular
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