Question

i every time cunfused by group velocity and phase velocity,please make it to me understand. wht are these​

Answer 1

★PHASE VELOCITY:

The phase velocity, v of a wave is how fast the wave transfers energy in terms of time. It is simply the product of the frequency, f of a wave and the wavelength, λ of the wave.

v=fλ

★GROUP VELOCITY;

The group velocity is defined only to the superimposed waves. • The group velocity is the velocity of the wave with lower frequency

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●What is the difference between group velocity and phase velocity;

• Phase velocity is defined for both, the single waves and superimposed waves.

• The group velocity is defined only to the superimposed waves.

• The group velocity is the velocity of the wave with lower frequency, but the phase velocity is the velocity of the wave with higher frequency.