Light starts from a source and bounces off objects which are perceived by our eyes and our brain processes this signal, which. Light reflection and refraction class 10 notes science. A line drawn in the direction of propagation of light is called a. Light reflection and refraction notes for class 10 download pdf. This website and its content is subject to our terms and conditions. Refraction takes place when light passes from air to glass or from glass into air. Reflection and refraction worksheet teachers pay teachers. Reflection and refraction when light hits a surface, one or more of three things may happen. Feb 14, 2010 snells law reflection and refraction of light chapter 3 physics. Light reflection and refraction 161 let us recall these laws i the angle of incidence is equal to the angle of reflection, and ii the incident ray, the normal to the mirror at the point of incidence and the reflected ray, all lie in the same plane. Refraction takes place when light passes from air to water or from. Light reflection and refraction laws of reflection i i r ii ao, op, and ob are coplanar spherical mirror centre of curvature centre of the sphere of which the spherical mirror is a part pole mirror centre focus where parallel rays parallel to the principal axis meet or appear to meet after reflection. Interaction of waves reflection, refraction, diffraction and interference reflection a wave strikes a barrier and bounces back a mirror creates a reverse image of an object as light waves are reflected off the shiny surface refraction the bending of a wave due to a. Physics 100 multiple choice questions with answer for ssc.
Cbse class 10 science revision notes chapter 10 offered by vedantu are available in pdf format to ease the exam preparation of students taking the cbse. Light speeds up as it passes from glass to air, and so bends away from the normal. We will focus on reflection this chapter and on refraction next chapter. Reflection and refraction 17 be scattered away from its original direction figure 2. If light is a wave, two sources emitting waves in a synchronized fashion1. Refractive index into a medium with a different refractive index. Reflection, refraction fiber optic, spectrum lab these three labs are designed to be used in a light unit. Light is a form of energy that enables us to see things. Students will have first hand experience experimenting with mirrors, fiber optics and spectrums. Interaction of waves reflection, refraction, diffraction and interference reflection a wave strikes a barrier and bounces back a mirror creates a reverse image of an object as light waves are reflected off the shiny surface refraction the bending of a wave due to a change in speed because it passes through a new medium styrofoam cup.
Prepared by teachers of the best cbse schools in india. There is an angle of incidence for which the angle of refraction will be 90. Refraction is used to guide light in optical instruments. All objects have a degree of reflection and absorption. Coin placed in a bowl when seen from a place just disappears. This is called total internal refraction this happens when light tries to pass from a dense medium glass to a lessdense medium air at a shallow angle 16 air glass. Reflection takes place when the light does not pass into the material, but is instead bounced off the surface. The incident ray, the reflected ray and the normal are all in the same plane 2. The angles of incidence and reflection are measured with respect to the normal to the reflecting surface, as shown in figure 2. Read online chapter10 light reflection and refraction ncert. These laws of reflection are applicable to all types of reflecting surfaces. Reflection of light on a plane mirror purpose to study how rays are reflected on a plane mirror and to determine the law of reflection introduction the shape and location of the image created by reflection from a mirror of any shape is determined by a few simple principles. Ncert solutions class 10 science chapter 10 light reflection and. Redraw the given diagram and show the path of the refracted ray.
Jan 28, 2020 ncert book for class 10 science chapter 10 light reflection and refraction is available for reading or download on this page. When a light wave strikes an object, it can be absorbed, reflected, or refracted by the object. Reflection, is when the light goes back to the previous medium, but changes direction. Cbse class 10 science chapter 10 light reflection and refraction notes. By christiaan huygens 1629 1695, dutch physicist, as double refraction of. In the natural world, light can also be transmitted by an object.
Lenses for imaging are the most common application of refraction, and iwill be discussed in detail in a later section. Download th physics light reflection and refraction book pdf free download link or read online here in pdf. By rotating the ray table, set the angle of incidence to each of the settings shown in table 2. Refraction of light pdf refraction is the bending of light when it reading architectural working drawings residential and light goes from one transparent medium to. View pdf cbse class 10 physics light reflection and. When light hits a surface, one or more of three things may happen. Ray box, single slit, mirror, protractor, rectangular glass block, pencil, ruler. A ray is equivalent to a very narrow beam of light, and it. Ncert book class 10 science chapter 10 light reflection. Light reflection and refraction notes for class 10 formulas download pdf. Reflection absorption normal air exercise45 intro to optics part1 2 physics 534 lawrence ernest. That is, light can pass through an object with no effect an xray.
Light reflection and refraction class 10 notes science chapter 10 in pdf format for free download. All refraction of light and reflection occurs at an interface. Change the angle of incidence to 20 0, 40 0 and 60 0. Snells law reflection and refraction of light chapter 3 physics.
Resources cover the laws of reflection and refraction, the uses of mirrors, and some practice work on shadows and eclipses. List four properties of the image formed by a plane mirror. This videos explores the propagation of light, light reflection and refraction phenomena. Knowing the difference between reflection and refraction will help you understand basic phenomenon of science. The scattered light goes off in many different directions, and may be scattered again and again before it is finally absorbed. Read online th physics light reflection and refraction book pdf free download link book now. View pdf cbse class 10 physics light reflection and refraction worksheet cbse class 10 physics worksheet lightreflection and refraction practice worksheets for cbse students. On the flip side, refraction is when light is absorbed by the medium but the direction and speed is affected.
Research reflection, refraction, and dispersion world of. The best app for cbse students now provides light reflection and refraction class 10 notes latest chapter wise notes for quick preparation of cbse board exams and school based annual examinations. Students who are in class 10 or preparing for any exam which is based on class 10 science can refer ncert book for their preparation. Light slows down as it passes from air to glass, and so bends toward the normal. Jan 31, 2017 this videos explores the propagation of light, light reflection and refraction phenomena. You will also be able to download the pdf file for ncert solutions for class 10. A spherical metasurface with phase discontinuities leads to unconventional light bending compared to standard refractive lenses. To investigate the reflection and refraction of light. Class 10 science chapter 10 light reflection and refraction. Light reflection and refraction light an object reflects light that falls on it. Ncert book for class 10 science chapter 10 light reflection and refraction is available for reading or download on this page. For each angle of incidence, record the angle of reflection reflection 1. Obviously these beams have orthogonal polarization, with.
Mar 21, 2020 download chapter10 light reflection and refraction ncert. A ray is a thin beam of light that travels in a straight line. Covers reflection and refraction, with diagrams to show what is going on. Refraction of light refraction is the change of speed of light when it moves from one medium into another. It is bent toward or away from the normal according to the. Reflected reflection of the light bounces the energy back into the same medium that it came from. Reflection, refraction and total internal reflection of light part a. The law of reflection still holds, however, at each small section of. A wave front is the line not necessarily straight or surface connecting all the. The angle of reflection equals the angle of incidence. Due to refraction, the velocity of transmitted light is less than the velocity before it entered the medium. Rays of light parallel to the principal axis after reflection from a convex mirror get diverged and appear to come from a point behind the mirror. Direct the light reflected by the mirror on to a sheet of paper held close to the mirror. The light may be reflected back from the surface, transmitted through the material in which case it will deviate from its initial direction, a process known as refraction or absorbed by the material if.
This result is usually written in terms of the index of refraction of each medium. Physics optics exercise reflection free pdf file sharing. According to the law of refraction, also known as snells law. When light travels from one medium to another, three phenomena can occur. Using that the speed of light is v c n we deduced that. An ideal resource to give to students when you finish the topic, as a summary, or when you return to revise the topic, as a recap. Download pdf of ncert solutions for class 10 science chapter 10. Ncert solutions for class 10 science chapter 10 light reflection. If light passes into a medium with a smaller index of refraction, the angle of refraction is larger. A light ray enters from medium a to medium b as shown in figure 10. The eyes and brain trace the light rays back into the water as though they had not refracted, but traveled from the object in a straight line, creating a virtual image of the object that appears at a shallower depth. Refraction occurs when the light passes into the material.
When light is incident upon a rough surface, even microscopically rough such as this page, it is reflected in many directions, as shown in fig. Because of diffuse reflection in all directions, an ordinary object can be. Students will need to be able to differentiate between a light source and a reflection. The light may be reflected back from the surface, transmitted through the material in which case it will deviate from its initial direction, a process known as refraction or absorbed by the material if it is not transparent at the.
Difference between reflection and refraction with comparison. As for reflection, a simple law characterizes the behavior of a refracted ray of light. Ncert book class 10 science chapter 10 light reflection and. Cbse class 10 science chapter 10 light reflection and refraction notes in pdf are available for free download in mycbseguide mobile app. Reflection refraction worksheet teachers pay teachers. It is possible to see a light source even in the dark because the light passes directly into the eyes. A group of rays of light emitted by a source of light is called a beam of light.
Th physics light reflection and refraction pdf book. It is formed at the same distance behind the mirror as the object is in front of the mirror. Light, reflection, and color characteristics of light light is an electromagnetic wave. A line drawn in the direction of propagation of light is called a ray of light. Refraction takes place when light passes from air to water or from water to air. This scattering is caused by the interaction of light with small particles, even atoms or molecules, within the material. To an astronaut in space, the sky will appear to be a violet b red c blue. Light reflection and refraction notes for class 10. The refractive index of medium b relative to a will be a greater than unity b less than unity. Snells law also predicts the phenomenon of total internal reflection. Objects that produce light are called luminous and are considered sources of light. The angle of incidence is equal to the angle of reflection. Absorption, reflection, and refraction of light maya lt. Light reflection and refraction teaching resources.
Refraction of light to understand why light bends when passing from one transparent material to another, imagine a cartwheel rolling from a sidewalk onto grass. Download chapter10 light reflection and refraction ncert. Total internal reflection if the angle of incidence is larger than this, no transmission occurs. Reflection of light reflection of light is the phenomenon of bouncing back of light in the same medium on striking the surface of any object. When light encounters matter the 3 possible fates to befall the energy of the light when it interacts with mattersubstances. Total internal reflection in the equation above, if the term inside the sqrt is negative, then there is no refraction. In fact, reflection of light may occur whenever light travels from a medium of read the. It is natural to treat the propagation of light in terms of rays. All books are in clear copy here, and all files are secure so dont worry about it. In fact the ratio of these speeds tells you the refractive index of the substance. The phenomena not explained by this theory i interference, diffraction, polarisation, double refraction and total internal reflection. The color of the objects we see in the natural world is a result of the way objects interact with light. Whenever a light strikes the surface of some material at an angle, part of the wave is reflected and part is transmitted or absorbed. Science chapter 10 light reflection and refraction in hindi pdf download.
The reflection and refraction of light rays and wave fronts light is a very complex phenomenon, but in many situations its behavior can be understood with a simple model based on rays and wave fronts. Pdf reflection and refraction of light from metasurfaces with. This version includes the fixed pdf worksheet files as well as the editable word copies. Reflection and refraction are two commonly observed optical properties of light. The law of reflection states that, on reflection from a smooth surface, the angle of the reflected ray is equal to the angle of the incident ray. This reflected light when received by our eyes, enables us to see things. The bending of light when it goes from one medium to another obliquely is called refraction of light. We see a variety of objects in the world around us.
Refraction is when the speed and direction of light changes, as light moves from one. It can be complemented by phet simulations on geometrical optics. The law of reflection still holds, however, at each small section of the surface. Electromagnetic waves are ultimately produced by an accelerating charge.
Hold a concave mirror in your hand and direct its reflecting surface towards the sun. A concise explanation of light for gcse aqa 91 physics in a printable format. As shown below, an electromagnetic wave is a transverse wave consisting of mutually perpendicular oscillating electric and magnetic fields. Cbse class 10 science chapter 10 light reflection and. Move the sheet of paper back and forth gradually until you find on the paper sheet a bright, sharp spot of light.
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