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physic 08.pptx

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physic 08.pptx

  1. 1. Introduction of waves PHYSICS CHAPTER 08
  2. 2.  Waves: energy transferred from one place to another Types Mechanical waves Electromagnetic Matter waves Progressive waves energy transfer by moving away from resources of disturbance Kind of progressive wave Transverse wave Longitudinal wave
  3. 3. Periodic wave produced by continuous and ryhythmic distrurbanc in medium Types of periodic wave Tranverse periodic wave Crest Trough Amplitude Wavelength Time period Speed of wave Wave profile Longitudinal periodic wave
  4. 4. Speed of sound in air Compressibility intertia Newtons`s formula Calculation of modulus of elasticity Drawbacks in Newton`s formula Laplace Correction
  5. 5. Effect of speed of sound in Air Effect of Pressure Effect of Density Effect of Temprature
  6. 6. Superposition Principle: When two are more waves overlapping space the resultant disturbance is equal to the algebraic sum of the individual disturbance Cases of superposition principle interference beats stationary waves
  7. 7. • Interfernce When wave having same frequency and travelling in same direction Types of interference Constructive interference Destructive interference Beats When wave having different frequency and travelling in same direction Conclusion Use of beats
  8. 8. Reflection of Wave: Bouncing back of wave from the boundary of medium Denser Medium Rare Medium Results
  9. 9. Properties of stationary wave Nodes Antinodes Stationary Waves in Stretched String Speed of wave on string First mode of vibration Second mode of vibration Third mode of vibration nth mode of vibration
  10. 10. Stationary waves in Air Column Types open organ pipe closed organ pipe
  11. 11. Doppler effect: Apparent change in the frequency (or pitch) of waves due to the relative motion b/w the source and observer Different Cases Application of Doppler effect Radar system speed of Satellite Sonar Speed of star Speed of car

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