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What is Dimensional Formula of Wave number (Propagation constant) ?

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Wave number can be defined as the number of waves per unit length. In other words it is number of waves that occurs across a fixed distance. It is also known as propagation constant.

Wavenumber is reciprocal of Wave length. Unit of Wavenumber are cycles per centimeter or inverse centemeters.

Wave number (k) = 2 π / λ (Wave length)

Dimensional formula of wavelength = M0L1T0

So putting this value in the formula we get,

Dimensional Formula of Wave number or Propagation constant  = M0L-1T0
SI units of Wave number or Propagation constant is m-1.

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Comments
  • Deepika July 21, 2016 at 9:06 am

    It’s very useful for me

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