Physics

Nine Standard

Test your understanding of this lesson Production and propagation of sound:-

1)
For production of sound the mandatory condition is
  • vibration of the source body
  • displacement of the source body
  • acceleration of the source body
  • all of these
2)
For propagation of sound
  • a material medium is required
  • no material medium is required
  • a solid medium is mandatory required
  • air medium is mandatory required
3)
Number of complete vibration made by a vibrating body in one second is called
  • wavelength
  • wave velocity
  • frequency
  • amplitude
4)
Hertz is the unit of
  • amplitude
  • frequency
  • wavelength
  • wave velocity
5)
Sound wave is a kind of
  • elastic wave
  • electromagnetic wave
  • transverse wave
  • none of these

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