Waves

• Continuous disturbance that transfers energy without any net displacement of the medium particles is called wave.

 

• Different types of waves on the basis of their production are mechanical wave, electromagnetic wave and matter wave.

 

• Different types of mechanical waves on the basis of their propagation transverse wave and longitudinal waves.

 

• Mechanical waves need a medium for its propagation.

 

 

 

• Representation of a sinusoidal wave travelling along the positive x-axis is

                 y(x, t) = a sin(kx − ωt + Φ)

• The equation can also be represented as linear combination of sine and cosine function.

               y(x, t) = A sin(kx − ωt) + B cos(kx − ωt), where a = and Φ

 

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