Question

(b)
Equation for wave vector is​

Answer 1

Answer:

In physics, a wave vector (also spelled wavevector) is a vector which helps describe a wave. ... Its magnitude is either the wavenumber or angular wavenumber of the wave (inversely proportional to the wavelength), and its direction is ordinarily the direction of wave propagation (but not always, see below).

Answer 2

The equation of the wave vector is $k=(K x, k y, k z)$

Explanation:

• The wave vector helps describe a wave and its properties and has a magnitude and a direction.  
• The magnitude is determined by the Angular Wave Number of the wave and its direction is dependent on the direction of wave propagation.  
• The general equation of the wave vector is given $k=(K x, k y, k z)$by where k is the Wave number, (reciprocal of wavelength) and x, y and z are the three-dimensional directions in the Cartesian Co-ordinates.

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