Sound waves in air are created by making a surface vibrate so it sends compression waves through the surrounding air. Lessons lecture notes the physics classroom conceptual. Because of the central role played by sound in speech communication, it is important to have a good. However, the document should not be uploaded to other servers for distribution to andor display by others. While a mechanical wave exists in a medium which on deformation is capable of producing elastic restoring forces waves ofproducing elastic restoring forces, waves of electromagnetic radiation and probably gravitational. This article is an introduction to the physics of waves as it relates to sound propagation. Waves a wave is a disturbance that pppg gropagates through space and time, usually with transferrance of energy. Physics notes form 2 free download kcse revision notes pdf. Thus the air molecules only move to and fro or forwards and backwards in the direction of travel of the wave. While a mechanical wave exists in a medium which on deformation is capable of producing elastic restoring forces waves ofproducing elastic restoring forces, waves of.
Waves class 11 notes physics mycbseguide cbse papers. Infrasound is sound waves that have frequencies below the lower limit of the humans range of audibility. Sound is a longitudinal wave produced by a vibrating source that causes regular variations in. Previous equilibrium and centre of gravity form 2 physics notes hookes law form 2 physics notes next. Sound waves revision notes learn igcse physics oxnotes. Sound waves are longitudinal waves that must pass through a medium.
Examples of wave motion include waves on strings, water waves, seismic waves. Problem set 6 pdf problem solving help video electromagnetic. Other magnets produced artificially by man are called artificia l magnets. Class 11 physics revision notes for chapter 15 waves free pdf download. The pdf version of the teacher toolkit on the topic of the nature of sound is displayed below. The minimum distance from a sound reflecting surface to hear an echo is 16. In a solid, a sound wave can be either longitudinal or transverse. Gce o level physics notes mini physics learn physics. Lecture 11 chapter 16 waves i university of virginia. Download pdf for future reference install our android app for easier access click the link below to download the full form 2 physics notes pdf document, with all the topics. A sound wave is both the end product of the speech production mechanism and the primary source of raw material used by the listener to recover the speakers message. Periodic waves are reflected and inverted and interfere with one another creating standing waves. Light, water waves and waves on a string are examples of transverse waves. Aipmt neet physics waves and sound mcq practice sample papers problems free pdf download with solution 2017 2018.
A sinusoidal wave of frequency 500 hz has a speed of 350 ms. Sound lies at the very center of speech communication. Sound waves can only travel through a solid, liquid or gas. Sound waves, seismic waves and waves on strings are known as mechanical waves. Characteristics of wave the characteristics of waves are as follows. The period of class in high school may be 50 minutes. Class 11 physics revision notes for chapter 15 waves. Powered by create your own unique website with customizable templates. Lessons lecture notes the physics classroom conceptual waves. There is energy transport the disturbance propagates, but there is no net transfer of mass no. Even more important, though only touched on in this book, is the wave phenomenon of quantum mechanics, built into the fabric of our space and time. The sound energy is transferred from one molecule to another and so travels along the wave.
In nearly all areas of science and therefore real life energy is transferred via the vibrations that make up waves. Sound a disturbance which propagates through an elastic material at a speed which is characteristic of that material. Lodestone is the only known natural magnet which was discovered by the chinese 2,000 years ago. We will start with periodic motion for the rst two lectures, with our speci c examples being the motion of a mass attached to the end of a spring, and the pendulum. Revision notes on waves and sound waves askiitians. The diagram above shows the side view of a sound wave. The nature of waves summary the physics hypertextbook. The wave equation outline of mechanical waves longitudinal and transverse waves waves in a string, sound waves the wave equation description of waves using functions of two variables travelling waves the wave equation 0 y v y 1. The repetition of sound caused by the reflection of sound waves is called an echo.
The document covers class 12 physics notes on sound waves containing top concepts like wave motion, mechanical wave motion, progressive wave, superposition principle, stationary waves etc. Icse class 10 physics revision notes chapter 7 sound. Gcse revision notes physics revision notes waves 1. Transverse waves have vibrations perpendicular to the direction of travel e. Physics of sound penn state mechanical engineering. The notes available here are great for revision and studying on the go.
The o level physics content here is equivalent to the physics required to obtain american high school diploma. Whether youre talking out loud or texting on your phone, theres going to be a wave transmitting information. Where do sounds come from sounds are produced by vibrating or oscillating objects. Vibration can be described as a back and forth motion of an object.
Although alice move with speed v relative to bob, she notes the same speed. Mechanical waves and sound powerpoint notes sound waves. Download revision notes for waves class 11 notes physics and score high in exams. The physics classroom grants teachers and other users the right to print this pdf document and to download this pdf document for private use. Wave motionis the disturbance, set up in the medium, due to the repeated periodic motion of the particles of the medium and travels from the particle to particle, the particles themselves keep vibrating about their mean positions. Electromagnetic wavestheory allen physics download pdf. Waves class 11 notes physics chapter 15 waves wave is a form of disturbance which travels through a material medium due to the repeated f periodic motion of the particles of the medium about their mean positions without any actual transportation of matter. Note that the pressure waveform takes on a high value during instants of compression.
Preface these are the lecture notes provided for physics 224, the physics of music, taught at mcgill university in fall 2006. Part 2 wave motion and sound the general discussion of wave motion is important because the ideas of wave propagation are ubiquitous. To study the properties of common waves waves on strings, sound waves, and light waves. A sound is a form of energy that is produced when air molecules vibrate in a particular pattern called waves. Depending upon the vibrations, a sound is produced. Sound waves are longitudinal waves that must pass through a medium, such as air. Sound waves in air and under water are longitudinal. Swanson will have shown you a lovely demonstration of these two types of waves. A wave can be described as a disturbance that travels through a medium from one location to another location. All other selfstudy revision notes are also available for download, free of charge. Magnets are substances that are able to attract and hold items.
Ncert cbse notes for class 9 science physics chapter 12 sound. Echolocation waves can have frequencies of about 100,000 hz. There are familiar, everyday sorts of waves in water, ropes and springs. Transverse waves water waves, waves on a string or spring, seismic waves, and electromagnetic waves. A sound wave is an air pressure disturbance that results from vibration. The unit is the mks rayl newtoncubic meter u p z 5. Waves class 11 notes physics chapter 15 learn cbse. This explains why you almost always see the flash of lightning before hearing the crash of the thunder. Learn the fundamentals of waves and sound in this unit. To register physics tuitions on to clear your doubts. They were written by the instructor in fall 2005 and represent a. Mechanical waves and sound powerpoint notes free download as powerpoint presentation.
If this is too basic for you, you can read up on a level physics equivalent to advanced placement most of the topics have multiplechoice questions mcqs quiz. Traveling waves waves propagate from one place to another. While it does not require a background in physics to understand, it is assumed that the reader has at least high school level linear algebra, calculus, and trigonometry. From source to detector sound from an instrument to ear cell phone to cell tower and vice versa em waves water waves a disturbance in the water moves outward. Sound is caused by vibrations, of the front of a violin. There are less visible but equally pervasive sound waves and electromagnetic waves. Thanks for these notes but can you plz make all into a single zip pdf it might do a great help for all jee aspirants. Notes on oscillations and mechanical waves periodic motion.
Sound is a longitudinal wave produced by a vibrating source that causes regular variations in air pressure p in diagram above. Period definition the time required to complete a single cycle. Waves are responsible for basically every form of communication we use. Every attempt has been made to explain the concepts. Download cbse class 11th revision notes for chapter 15 waves class 11 notes physics in pdf format for free. These notes are combined with chapter 14 oscillations. Their vibrations occur in the same direction as the direction of travel. Sound waves are longitudinal waves, and so the particles move back and forth parallel to the direction of the wave. Production of sound sound is produced due to the vibration of objects. A wave is a disturbance that propagates through space. Revision notes for science chapter sound class 8th. Notes on oscillations and mechanical waves the topics for the second part of our physics class this quarter will be oscillations and waves. Properties of sound waves sound waves travel at about 340 ms in the air much slower than the speed of light.
The physics of waves version date february 15, 2015. Example the period of the moon circling the earth is 28 days. Because the range of sound intensities is so wide, it. To distinguish this from the motion of transverse waves see the previous section, the places in the wave pattern that are stationary, while the rest of the medium moves back and forth, are called displacement nodes. Waves that pass through a substance are vibrations which pass through that substance. Sound is usually caused by radiation from a solid vibrating surface or fluid disturbances. In the case of sound waves, the vibrations create a series of compressions and expansions and the wave travels along the compression in the direction of the propagation. Along with the transverse and the longitudinal waves some waves in nature demonstrate the combination of both such as water wave. Download allen kota physics chapterwise notes and problems with solutions all jee mainsadvance study materials available to download for free. Waves propagate with a finite speed sometimes called the wave speed that depends upon the type of wave, the composition of the medium, and. Vibration is the rapid to and fro motion of an object. Longitudinal waves well, the best example would be sound waves, but you saw them on springs as well.
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