Gcse physics powerpoint and accompanying resources covering. Notes for class 10 science physics chapter 10 light reflection and refraction download in pdf. Chapter 10 reflection, refraction, diffraction and interference overview when waves are incident at a boundary between media such as water waves on shallow water encountering a sudden change in depth of the water or light passing either from air to glass or glass to air, part of the wave energy is reflected and part is transmitted. The reflection and refraction of waves primarily water waves, using simply resources version of ripple tanks. In that unit, we saw that water waves have the ability to travel around corners, around obstacles and through openings. Theory when a ray of light passes from one medium into another one of different optical density, it undergoes a change of velocity and a consequent change in direction. Reflection and refraction of waves at the boundary of a non scielo. If we equate the arrival time of the direct wave and the refracted wave and solve for the distance we obtain the. Refraction is the effect where a wave appears to bend as it crosses a boundary between two mediums. As shown below, an electromagnetic wave is a transverse wave consisting of mutually perpendicular oscillating electric and magnetic fields. It is simpler to visualize a wave by drawing the wave fronts, which are usually taken to be the crests of the wave. Professionals, teachers, students and kids trivia quizzes to test your knowledge on the. It is useful not only in describing how light waves propagate but also in explaining the laws of reflection and refraction.
Pdf reflection and refraction of light from metasurfaces with. So the laws of refraction state that the angle of incidence is the angle between the incident ray and the normal and the angle of refraction is the angle between the refracted ray and the normal. This scattering is caused by the interaction of light with small particles, even atoms or molecules, within the material. Reflection and refraction of emwaves at portland state university. Reflection occurs when a wave hits the interface between two dissimilar media. Waves including sound and light can be reflected at the boundary between two different materials. To understand the terms reflection and refraction of all waves when we look in a mirror, why is it that the image we see is as we expect. Light reflection and refraction notes for class 10 download pdf. The physics of polarization egidio landi deglinnocenti department of physics and astronomy. File type pdf answers to refraction woorksheet for physics light, sound, and the nature of reality physics of waves.
This equation was a partial differential equation in x. The plane containing both the normal to the surface and the direction of. Download file pdf conceptual physics wave and sound quiz answers conceptual physics wave and sound quiz answers as your pal in spending the time. Theoretical analysis of reflection and refraction of. Physics notes form 3 free download kcse revision notes pdf. Pdf the phenomenon of reflection and refraction is studied at the welded. A curved line, or a surface for a three dimensional wave, that connects all adjacent. Here, equation 10 shows that two pwaves exist in the medium. Applied science technology 5a or items listed in lab sheet laser flashlight background. In unit 11 of the physics classroom tutorial, the reflection, refraction, and diffraction of sound waves was discussed. If an ocean wave approaches a beach obliquely, the part of the wave. Electromagnetic waves plane waves department of physics.
Students explore how the wavelength changes as well as the refractive angles. We know that when a light travels from one transparent medium to another transparent medium its path changes. An example of this effect is when laser light appears to be bent by going through a piece of glass. For manual work, the doflimits are usually indicated on the. Physics 504, spring 2011 electricity and magnetism shapiro electromagneti waves re. In reflection, a wave encounters an obstacle and is reflected back. The points presented below are substantial, so far as the difference between reflection and refraction is concerned. The waves on an ocean are physical waves caused mainly by wind.
Light reflection and refraction notes for class 10. Light is an electromagnetic wave caused by excited electrons. Refraction of light is the most commonly observed phenomenon, but other waves such as sound waves and water waves also experience refraction. State the laws of reflection and refraction, describe examples and apply the laws to simple. If an ocean wave approaches a beach obliquely, the part of the wave farther from the beach will move faster. As the waves encounter obstacles in their path, their behavior can be observed by watching the movement of the dark and bright spots on the sheet of paper. Reflection this area of physics is frequently considered to be easy and straightforward, this is because. Can be delivered in various ways depending on ability of class or if nonspeci. Reflection and refraction 17 be scattered away from its original direction figure 2. The diffraction of water waves was discussed in unit 10 of the physics classroom tutorial.
Regardless of each wave, its frequency does not change in refraction, however, the speed and wavelength may change. Refraction, in physics, the change in direction of a wave passing from one medium to another caused by its change in speed. Electromagnetic waves are ultimately produced by an accelerating. Wave refraction the slowing and bending of waves in shallow water wave diffraction propagation of a wave around an obstacle wave reflection occurs when waves bounce back from an obstacle they encounter. Lecture iii3 reflection and refraction of emwaves at a. Wave energy wave energy may be produced by vibrating objects or particles i. Refraction is the change in direction of a wave caused by a change in speed as the wave passes from one medium to another. Navy supplement to the dod dictionary of military and associated terms pdf. Wave refraction it is the phenomenon that occurs when a wave passes from one medium to another of different characteristics, having its direction deviated. To study the refraction of light from plane surfaces. Polarization is an important physical property of electro magnetic waves which is connected with the trasversality character, with respect to the direction of propagation, of the electric and magnetic field vectors.
Index of refraction the index of refraction or refractive index of a material is a dimensionless parameter. Chapter 10 reflection, refraction, diffraction and. Reflection and refraction of waves using huygens principle. Reflection and refraction of a plane wave at oblique incidence let us consider a plane wave that obliquely incidents at the boundary of two media that are characterized by their permittivity and permeability see figure 1. In addition to the wave reflected from the front surface there will be a refracted transmitted wave. Reflection and refraction multiple choice questions and.
When, for example, a ray of light traveling through air strikes the surface of a piece of glass at an angle, one side of the wave front enters the glass before the rev 082019. To determine the index of refraction for several substances. Wave refraction similarly, refraction can easily be understood using huygens principle. The new wave front is a plane tangent to the wavelets and is where we would expect the wave to be a time \t\ later. Mcq quiz on reflection and refraction multiple choice questions and answers on reflection and refraction mcq questions on reflection and refraction objectives questions with answer test pdf for interview preparations, freshers jobs and competitive exams. Covers quantum waves, sound waves, and light waves. We also considered an equation, a very general equation for wave motion for propagation along the x axis. Pdf a threedimensional extension of the recently demonstrated. Snells law also known as snelldescartes law and the law of refraction is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air in optics, the law is used in ray tracing to compute the angles of incidence or refraction.
The reverting of light or sound waves in the same medium, when it falls on the plane, is called reflection. In the case of waves on a water surface, the perturbed quantity is simply the height of the surface, which oscillates about its stationary level. At a later time, the shape of the wave is the curve that is tangent to all the wavelets. Books pdf basic physics interview questions and answers pdf basic physics interview questions and answers pdf basic physics pdf basic physics questions and answers basic physics questions and.
How much a wave is refracted is determined by the change in wave. I hope to emphasize that the physics of standing waves is the same. Refraction is commonly explained in terms of the wave theory of light and is based on the fact that light travels with greater velocity in some media than it does in others. Reconciliation of generalized refraction with diffraction theory. Next, we derive the mathematical form of 3dgsl in 36, 37 from equation a1. This definition links the two forms of the refraction equation. Refraction can cause optical illusions as the light waves appear to come. Properties of light university of maryland college of. Reflection and refraction of a plane wave at oblique incidence. Ripple tank demonstrations are commonly done in a physics class in order to discuss the principles underlying the reflection, refraction, and diffraction of waves. In physics, refraction is the change in direction of a wave passing from one medium to another. Now we will see how light waves demonstrate their wave nature by reflection, refraction and diffraction. First we explore what is meant by refraction and look at how this is due to changes in the speed of waves as. From this they determine how to draw wave refraction diagrams.
When refraction occurs how to draw ray diagrams for the refraction of light the idea that during refraction, the wavelength of a wave stays constant, and it is the wave speed that changes. Home up board question papers ncert solutions cbse papers cbse notes ncert books motivational. Refraction bending of light as it enters a medium with different optic density higher optic density light is slowed, bent towards the normal lower optic density light speeds up, bent away from the normal nz physics 1. In refraction, a wave bends when it enters a medium through which it has a different speed. Em waves are generated by vibrating electrons composed of two perpendicular oscillating. A crest of water will absorb more light than a trough. Diffraction involves a change in direction of waves as they pass through an opening or around a barrier in their path. When she does, she notices that the light refracts. Physics form 5 refraction page 1 refraction represents the bending of the direction of the wave as it travels from one medium to the next. The reflection, refraction, and diffraction of waves were first introduced in unit 10 of the physics classroom tutorial. This bending is brought about by a change in the speed of the wave. Huygenss principle works for all types of waves, including water waves, sound waves, and light waves.
In diffraction, waves bend when they pass around small obstacles. Light, reflection, and color characteristics of light light is an electromagnetic wave. Pdf reflection and refraction of waves at the boundary of a non. Wave optics describes the connection between waves and rays of light. In each dielectric medium, light propagation is governed by the wave equation. As we are assuming no timedependence of the properties of the medium, we will. It explained the laws of reflection and refraction of light at an interface. Traveling waves appear only after a thorough exploration of onedimensional standing waves. Description this investigation uses the bending light simulation to mirror what happens to water waves was they pass from deep to shallow and vice versa. In physics, refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium. Experiments on refraction, reflection and total internal reflection this video includes some basic experiments on reflection. The shift in the direction of the radio waves, when it enters medium with different density, is known as refraction. Each point on a wave front is the source of a spherical wavelet that spreads out at the speed of the wave. For example, waves in deep water travel faster than in shallow.
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