Class IX

The time taken to complete one oscillation is called .
  1. Time period
  2. Velocity
  3. Frequency
  4. Wavelength
Which part of human ear converts sound vibrations into electrical signals
  1. Hammer
  2. Stirrup
  3. Tympanic membrane
  4. Cochlea
A wave in slinky travelled two and fro in 5 sec the length of the slinky is 5m. What is the velocity of wave?
  1. 10m.s
  2. 5m/s
  3. 2m/s
  4. 25m/s
  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
  What type of sound waves can propagate in solids?
  1. Longitudinal only
  2. Transverse only
  3. Either longitudinal or transverse
  4. Non mechanical waves only
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