Wave Motion
Wave - A wave is a disturbance that transfers energy and momentum from one point to another in a medium.
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Types of Waves
Non Mechanical or Electromagnetic
Don't require medium
Speed equal to light speed
eg x-ray, light, heat, radio wave
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Mechanical Wave
Require Medium.
Medium should have properties
Elasticity, inertia and continuity
Eg, sound wave , water waves , waves in springs ♨️ and string 🧵
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Matter Wave
Related to matter
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Types of Mechanical Waves
1. Longitudinal wave
Vibrate along direction of propagation (being parallel )
Compression and rarefaction
Eg, Sound waves in air
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2. Transverse wave
Vibrate perpendicularly to the propagation of wave
Crest and Trough
Eg. Waves on string etc
[Image 52.jpg]
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Progressive Wave (Traveling wave)
The wave which travels in forward in the form of crest and trough or compression and rarefaction is called progressive wave
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[Image 57.jpg]
No Node and Anti node form
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Principle of Superposition of Waves 🌊
The principle of super position of wave states that the resultant displacement of the particle is equal to the algebric sum of individual displacements due to different waves.
y = y1+y2...
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Stationary Waves ( Standing wave) or Not moving wave
The resultant wave from due to super position of two progressive waves of same frequency and amplitude in opposite direction is stationary or standing wave.
Node - where the amplitude is minimum , pressure maximum
Anti node - where the amplitude is maximum, pressure minimum
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[Image 59.jpg]
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Numerical
Formula
If particle velocity v = w√(A^2-y^2)
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