CH-8 Physics

1. Introduction of waves
PHYSICS
CHAPTER 08

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. 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. Speed of sound in air
Compressibility
intertia
Newtons`s formula
Calculation of modulus of elasticity
Drawbacks in Newton`s formula
Laplace Correction

5. Effect of speed of sound in Air
Effect of Pressure
Effect of Density
Effect of Temprature

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. • 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. Reflection of Wave:
Bouncing back of wave from the boundary of medium
Denser Medium
Rare Medium
Results

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. Stationary waves in Air Column
Types
open organ pipe
closed organ pipe

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