Question

write dimensional formula of wave number​

Answer 1

Answer:

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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