Leadership

Physics

Nine Standard

Test your understanding of this lesson Waves, wave velocity and audible sound:-

1)
The medium through which wave velocity of sound is maximum
  • solid
  • liquid
  • gas
  • vacuum
2)
SI unit of wave velocity is
  • hertz
  • decibel
  • m/s
  • km/s
3)
SI unit of wavelength is
  • cm
  • meter
  • km
  • micrometer
4)
The range of frequency of sound audible to human beings is
  • 20-10000 Hz
  • 10-20000 Hz
  • 20-20000 Hz
  • 10-40000 Hz
5)
The relation among frequency(n), wave velocity(v) and wave length(\(\lambda\)) is
  • \(n=v\lambda\)
  • \(v=n\lambda\)
  • \(\lambda=nv\)
  • \(n=2v\lambda\)
Hand draw

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