WAVES WAVES waves waves waves waves 1 General
![WAVES WAVES](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-1.jpg)
![WAVES waves waves waves waves WAVES waves waves waves waves](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-2.jpg)
![1. General Wave Properties What actually do waves do? It provides a mechanism for 1. General Wave Properties What actually do waves do? It provides a mechanism for](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-3.jpg)
![¡ ¡ ¡ Waves are produced if there any vibrations There are basically 2 ¡ ¡ ¡ Waves are produced if there any vibrations There are basically 2](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-4.jpg)
![Longitudinal waves: Longitudinal waves:](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-5.jpg)
![Transverse waves: Transverse waves:](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-6.jpg)
![Wave Terminology l Amplitude, l The A: maximum displacement of a particle from its Wave Terminology l Amplitude, l The A: maximum displacement of a particle from its](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-7.jpg)
![Wave length (λ) l The distance between two successive particles which are in same Wave length (λ) l The distance between two successive particles which are in same](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-8.jpg)
![Crests and Troughs l The upper part of a transverse wave is called as Crests and Troughs l The upper part of a transverse wave is called as](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-9.jpg)
![Phase l The direction of movement of a particle when the waves passes is Phase l The direction of movement of a particle when the waves passes is](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-10.jpg)
![Frequency (f) l The number of complete oscillations made by a particle in one Frequency (f) l The number of complete oscillations made by a particle in one](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-11.jpg)
![Period (T) l The time taken for a particle to complete one oscillation l Period (T) l The time taken for a particle to complete one oscillation l](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-12.jpg)
![Wavefront l Any section or part of a wave is called as Wave front Wavefront l Any section or part of a wave is called as Wave front](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-13.jpg)
![Question ¡ Figure shows the graph of the variation of the displacement of a Question ¡ Figure shows the graph of the variation of the displacement of a](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-14.jpg)
![State values for ¡ (i) the amplitude of the wave = cm ¡ (ii) State values for ¡ (i) the amplitude of the wave = cm ¡ (ii)](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-15.jpg)
![State values for ¡ ¡ (i) the amplitude of the wave = 0. 6 State values for ¡ ¡ (i) the amplitude of the wave = 0. 6](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-16.jpg)
![Question ¡ Figure shows the graph of the variation of the displacement of a Question ¡ Figure shows the graph of the variation of the displacement of a](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-17.jpg)
![State values for the time for one complete cycle = s ¡ the frequency State values for the time for one complete cycle = s ¡ the frequency](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-18.jpg)
![State values for the time for one complete cycle = 1. 25 s ¡ State values for the time for one complete cycle = 1. 25 s ¡](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-19.jpg)
![Note: ¢ Always check the axes of the graph and analyse what you are Note: ¢ Always check the axes of the graph and analyse what you are](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-20.jpg)
![The Wave Equation ¢ Remember that speed can be found from the equation: The Wave Equation ¢ Remember that speed can be found from the equation:](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-21.jpg)
![The Wave Equation For waves, But v = velocity λ = wavelength (distance) f= The Wave Equation For waves, But v = velocity λ = wavelength (distance) f=](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-22.jpg)
![The Wave Equation Hence v = fλ The Wave Equation Hence v = fλ](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-23.jpg)
![Wave Production and Ripple Tank Wave Production and Ripple Tank](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-24.jpg)
![Ripple Tank l The Ripple Tank consists of a shallow glass-bottomed tray, a light Ripple Tank l The Ripple Tank consists of a shallow glass-bottomed tray, a light](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-25.jpg)
![Ripple Tank l Waves formed can be plane waves or circular waves. Ripple Tank l Waves formed can be plane waves or circular waves.](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-26.jpg)
![Ripple Tank l Screen below water tray is used to capture image of waves Ripple Tank l Screen below water tray is used to capture image of waves](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-27.jpg)
![Reflection of Waves Reflection of Waves](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-28.jpg)
![Note: n n When water waves get reflected, the only thing that changes is Note: n n When water waves get reflected, the only thing that changes is](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-29.jpg)
![Reflection of Waves Reflection of Waves](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-30.jpg)
![Reflection of Waves Reflection of Waves](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-31.jpg)
![Effect of Water depth on Waves Effect of Water depth on Waves](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-32.jpg)
![Effect of Water depth on Waves Effect of Water depth on Waves](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-33.jpg)
![Effect of Water depth on Waves n In moving from deep to shallow water Effect of Water depth on Waves n In moving from deep to shallow water](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-34.jpg)
![Refraction of Waves • Refraction of water waves occurs when waves move from deep Refraction of Waves • Refraction of water waves occurs when waves move from deep](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-35.jpg)
![Refraction of Waves • We have already seen waves entering a region of shallow Refraction of Waves • We have already seen waves entering a region of shallow](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-36.jpg)
![Refraction of Waves • Seen from the side view the change in wavelength can Refraction of Waves • Seen from the side view the change in wavelength can](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-37.jpg)
![Refraction of Waves • In a similar way to light slowing down as it Refraction of Waves • In a similar way to light slowing down as it](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-38.jpg)
![Refraction of Waves • Note: Wavelength and speed changes for this case. The frequency Refraction of Waves • Note: Wavelength and speed changes for this case. The frequency](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-39.jpg)
- Slides: 39
![WAVES WAVES](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-1.jpg)
WAVES
![WAVES waves waves waves waves WAVES waves waves waves waves](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-2.jpg)
WAVES waves waves waves waves
![1 General Wave Properties What actually do waves do It provides a mechanism for 1. General Wave Properties What actually do waves do? It provides a mechanism for](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-3.jpg)
1. General Wave Properties What actually do waves do? It provides a mechanism for the transfer of energy from one point to another without physical transfer of any materials.
![Waves are produced if there any vibrations There are basically 2 ¡ ¡ ¡ Waves are produced if there any vibrations There are basically 2](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-4.jpg)
¡ ¡ ¡ Waves are produced if there any vibrations There are basically 2 types of waves - transverse and longitudinal. They differ in their vibration of the particles of the medium
![Longitudinal waves Longitudinal waves:](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-5.jpg)
Longitudinal waves:
![Transverse waves Transverse waves:](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-6.jpg)
Transverse waves:
![Wave Terminology l Amplitude l The A maximum displacement of a particle from its Wave Terminology l Amplitude, l The A: maximum displacement of a particle from its](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-7.jpg)
Wave Terminology l Amplitude, l The A: maximum displacement of a particle from its rest position
![Wave length λ l The distance between two successive particles which are in same Wave length (λ) l The distance between two successive particles which are in same](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-8.jpg)
Wave length (λ) l The distance between two successive particles which are in same phase and same position It can also be defined as the distance between two successive crests or troughs for transverse waves l It can also be defined as the distance between two successive compressions or rarefactions for longitudinal waves l
![Crests and Troughs l The upper part of a transverse wave is called as Crests and Troughs l The upper part of a transverse wave is called as](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-9.jpg)
Crests and Troughs l The upper part of a transverse wave is called as Crest l The lower part of a transverse waves is called as Trough
![Phase l The direction of movement of a particle when the waves passes is Phase l The direction of movement of a particle when the waves passes is](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-10.jpg)
Phase l The direction of movement of a particle when the waves passes is called as Phase
![Frequency f l The number of complete oscillations made by a particle in one Frequency (f) l The number of complete oscillations made by a particle in one](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-11.jpg)
Frequency (f) l The number of complete oscillations made by a particle in one second l It can also be defined as the number of waves passed in one second
![Period T l The time taken for a particle to complete one oscillation l Period (T) l The time taken for a particle to complete one oscillation l](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-12.jpg)
Period (T) l The time taken for a particle to complete one oscillation l It can also be defined as the time taken for one complete wave to pass a point
![Wavefront l Any section or part of a wave is called as Wave front Wavefront l Any section or part of a wave is called as Wave front](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-13.jpg)
Wavefront l Any section or part of a wave is called as Wave front l Mostly it is represent with straight lines
![Question Figure shows the graph of the variation of the displacement of a Question ¡ Figure shows the graph of the variation of the displacement of a](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-14.jpg)
Question ¡ Figure shows the graph of the variation of the displacement of a wave with distance along the wave at a particular time.
![State values for i the amplitude of the wave cm ii State values for ¡ (i) the amplitude of the wave = cm ¡ (ii)](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-15.jpg)
State values for ¡ (i) the amplitude of the wave = cm ¡ (ii) the wavelength of the wave = cm
![State values for i the amplitude of the wave 0 6 State values for ¡ ¡ (i) the amplitude of the wave = 0. 6](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-16.jpg)
State values for ¡ ¡ (i) the amplitude of the wave = 0. 6 cm 5 cm (ii) the wavelength of the wave =
![Question Figure shows the graph of the variation of the displacement of a Question ¡ Figure shows the graph of the variation of the displacement of a](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-17.jpg)
Question ¡ Figure shows the graph of the variation of the displacement of a wave with time at a particular point along the wave.
![State values for the time for one complete cycle s the frequency State values for the time for one complete cycle = s ¡ the frequency](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-18.jpg)
State values for the time for one complete cycle = s ¡ the frequency of the wave = Hz ¡
![State values for the time for one complete cycle 1 25 s State values for the time for one complete cycle = 1. 25 s ¡](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-19.jpg)
State values for the time for one complete cycle = 1. 25 s ¡ the frequency of the wave = 0. 8 Hz ¡
![Note Always check the axes of the graph and analyse what you are Note: ¢ Always check the axes of the graph and analyse what you are](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-20.jpg)
Note: ¢ Always check the axes of the graph and analyse what you are given. Do not jump to the conclusion that the X-axis is always wavelength for they may give you period.
![The Wave Equation Remember that speed can be found from the equation The Wave Equation ¢ Remember that speed can be found from the equation:](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-21.jpg)
The Wave Equation ¢ Remember that speed can be found from the equation:
![The Wave Equation For waves But v velocity λ wavelength distance f The Wave Equation For waves, But v = velocity λ = wavelength (distance) f=](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-22.jpg)
The Wave Equation For waves, But v = velocity λ = wavelength (distance) f= 1 T So v = λ T
![The Wave Equation Hence v fλ The Wave Equation Hence v = fλ](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-23.jpg)
The Wave Equation Hence v = fλ
![Wave Production and Ripple Tank Wave Production and Ripple Tank](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-24.jpg)
Wave Production and Ripple Tank
![Ripple Tank l The Ripple Tank consists of a shallow glassbottomed tray a light Ripple Tank l The Ripple Tank consists of a shallow glass-bottomed tray, a light](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-25.jpg)
Ripple Tank l The Ripple Tank consists of a shallow glass-bottomed tray, a light source directly above the tray and a white screen below. l Waves formed by a vibrator bobbing up and down.
![Ripple Tank l Waves formed can be plane waves or circular waves Ripple Tank l Waves formed can be plane waves or circular waves.](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-26.jpg)
Ripple Tank l Waves formed can be plane waves or circular waves.
![Ripple Tank l Screen below water tray is used to capture image of waves Ripple Tank l Screen below water tray is used to capture image of waves](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-27.jpg)
Ripple Tank l Screen below water tray is used to capture image of waves produced. The apparatus is used to investigate waves travelling through water.
![Reflection of Waves Reflection of Waves](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-28.jpg)
Reflection of Waves
![Note n n When water waves get reflected the only thing that changes is Note: n n When water waves get reflected, the only thing that changes is](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-29.jpg)
Note: n n When water waves get reflected, the only thing that changes is the direction. Wavelength and frequency are the same throughout.
![Reflection of Waves Reflection of Waves](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-30.jpg)
Reflection of Waves
![Reflection of Waves Reflection of Waves](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-31.jpg)
Reflection of Waves
![Effect of Water depth on Waves Effect of Water depth on Waves](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-32.jpg)
Effect of Water depth on Waves
![Effect of Water depth on Waves Effect of Water depth on Waves](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-33.jpg)
Effect of Water depth on Waves
![Effect of Water depth on Waves n In moving from deep to shallow water Effect of Water depth on Waves n In moving from deep to shallow water](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-34.jpg)
Effect of Water depth on Waves n In moving from deep to shallow water the water, q q q the waves will move with a slow speed, the waves’ wavelength will become shorter, the frequency of the waves will be constant.
![Refraction of Waves Refraction of water waves occurs when waves move from deep Refraction of Waves • Refraction of water waves occurs when waves move from deep](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-35.jpg)
Refraction of Waves • Refraction of water waves occurs when waves move from deep water to shallow water (or vice versa). As with light it is brought about due to the different speeds of the waves passing through differing media.
![Refraction of Waves We have already seen waves entering a region of shallow Refraction of Waves • We have already seen waves entering a region of shallow](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-36.jpg)
Refraction of Waves • We have already seen waves entering a region of shallow water will be slowed down.
![Refraction of Waves Seen from the side view the change in wavelength can Refraction of Waves • Seen from the side view the change in wavelength can](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-37.jpg)
Refraction of Waves • Seen from the side view the change in wavelength can be seen more clearly.
![Refraction of Waves In a similar way to light slowing down as it Refraction of Waves • In a similar way to light slowing down as it](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-38.jpg)
Refraction of Waves • In a similar way to light slowing down as it enters a different media this will result in the water waves bending towards the normal as they pass from deep to shallow water.
![Refraction of Waves Note Wavelength and speed changes for this case The frequency Refraction of Waves • Note: Wavelength and speed changes for this case. The frequency](https://slidetodoc.com/presentation_image_h/e8b9ab561e1c77f717fe0d5c8ee32887/image-39.jpg)
Refraction of Waves • Note: Wavelength and speed changes for this case. The frequency of the waves stays the same.
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