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Transverse vs longitudinal waves
Travelling vs standing waves
Wave equation on a string
Path difference & phase difference
Direction of wave motion from equation
Particle velocity & acceleration from wave equation
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Wave speed on strings formula
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Superposition of pulses
Reflection from fixed end & free end
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Formation & key points of standing waves
Equation of standing waves
Standing waves in string fixed at both ends
Sonometer
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Closed organ pipe
Open organ pipe
Resonance tube
Beats
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Doppler effect — source & observer moving in same direction
Doppler effect — source & observer moving in opposite direction
Sound reflected from a fixed wall
