Reflection and refraction 17 be scattered away from its original direction figure 2. We have described reflection and refraction, but of course when a ray of light encounters an interface between two transparent media, a portion of it is reflected and a portion is refracted, and it is natural to ask, even during an early introduction to the subject, just what fraction is reflected and what fraction is refracted. Get notes for class 10 science chapter 10 light reflection and refraction. When light hits a surface, one or more of three things may happen. Displaying top 8 worksheets found for reflection and refraction of light. To examine light travel in rectangles and equilateral triangles using the laws of reflection and refraction. A wave front is the line not necessarily straight or surface connecting all the.
Refraction of light is the most commonly observed phenomenon, but other waves such as sound waves and water waves also experience refraction. A student has three concave mirrors a, b, c of focal lengths 20 cm, 15 cm and 10 cm respectively. 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. When light falls on a surface, following may happen. Laws of reflection states that the angle of incidence is equal to the angle of reflection. On the flip side, refraction is when light is absorbed by the medium but the direction and speed is affected. You will test these relationships in this set of experiments using a laser pointer as the source of.
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. Geometrical optics is the study of the behavior of straight line rays at the interference between two. Describe the phenomenon of dispersion and its explanation in terms of refractive index and the wave model of light. Reflection when a ray of light strikes a plane mirror, the light ray reflects off the mirror. When a ray of light enters a denser medium it is refracted towards the normal in such. Mcq questions for class 10 science light reflection and. For the spherical mirror, what is the relation between radius of curvature r and focal length f.
These notes were made as per new guidelines and student can easily download the pdf. When light falls on a highly polished surface like a mirror most of the light is sent back into the same medium. Light reflection and refraction class 10 physics complete. 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. Light reflection and refraction notes for class 10 formulas download pdf. If incident ray makes 900 then the angle of reflection. Use a light source, threeway mirror, rhombus prism, and protractor to measure angles of a light ray.
For incident angles larger than the critical angle, there is no refraction. When light passes from one medium to another, the angles of incidence and refraction, and the two refractive indices. Cbse class 10 science chapter 10 light reflection and refraction notes in pdf are available for free download in mycbseguide mobile app. This is an important principle in the field of thinfilm optics. In this chapter i am going to deal solely with specular reflection, the law of specular reflection being that the angle of reflection is equal to the angle of incidence. Reflection involves a change in direction of the light. Cause of refraction is change in speed of light while entering a different medium. How much a wave is refracted is determined by the change in wave speed and the initial direction of wave propagation. Total internal reflection if the angle of incidence is larger than this, no transmission occurs. This scattering is caused by the interaction of light with small particles, even atoms or molecules, within the material.
If the angle of incidence exceeds the critical angle, the light undergoes total internal reflection. To register science tuitions on to clear your doubts. The incident ray makes an angle of 900 with the surface. Light rays change direction when they reflect off a surface, move from one transparent medium into another, or travel through a medium whose composition is continuously changing. Refraction when a light wave moves from one medium to another, it changes speed and direction bends what allows us to see images, is the presence of light. 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. Refraction is caused by the change in speed of light.
Knowing the difference between reflection and refraction will help you understand basic phenomenon of science. Mcq questions for class 10 science with answers was prepared based on latest exam pattern. Light reflection and refraction class 10 notes are prepared strictly according to the latest ncert syllabus on the guidelines by cbse. In contrast, a less dense, lower refractive index material will reflect light in phase. 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.
Pdf general laws of reflection and refraction for subwavelength. Student worksheet activities about properties of light, reflection, refraction, reflection or refraction. A 4 x 107 to 8 x 107 m b 4 x 109 to 8 x 109 m c 4 x 105 to 8 x 105 m d 4 x 106 to 8 x 106 m. These laws of reflection are applicable to all types of reflecting surfaces. 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. Notes physics module 6 reflection and refraction of light optics and optical instruments 190 zthe ray of light parallel to the principal axis, on reflection, passes through the focus. When the object looks like it is broken, it is because the speed of the light wave changed. Reflection and refraction of light worksheets learny kids.
Light reflection and refraction worksheets dsoftschools. Reflection and refraction choose appropriate alternative. Free pdf download of cbse class 10 science chapter 10 light reflection and refraction multiple choice questions with answers. Free refraction activities and classroom resources. 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. A light ray enters from medium a to medium b as shown in figure 10. To study and observe the laws of reflection and refraction. The light may be reflected back from the surface, transmitted. Reflection this area of physics is frequently considered to be easy and straightforward, this is because. Chapter 10 light reflection and refraction is one of the important chapters in class 10 science and the expected marks weightage of the chapter according to the latest marking scheme is 7 marks. 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. Reflectionrefraction multiple choice identify the letter of the choice that best completes the statement or answers the question. Light starts from a source and bounces off objects which are perceived by our eyes and our brain processes this signal, which eventually enables us to see. For total internal reflection to occur, two conditions must be satisfied, namely.
Some of the worksheets for this concept are light reflection refraction, shedding light on refraction work name, physics work lesson 24 reflection and refraction, refraction tutorial work, total internal reflection, physics work, l2 reflection and refraction, light reflection refraction. For each concave mirror he performs the experiment of image formation for three values of object distance of 30 cm, 10 cm and 20 cm. Light reflection and refraction class 10 notes science. Dont forget to like if you likr it slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising.
A ray is a thin beam of light that travels in a straight line. A line drawn in the direction of propagation of light is called a ray of light. Vidyakul light reflection and refraction class 10 notes were made by expert teacher to help students in revision for board exam. Refraction of light is the change in direction of a light ray when it travels from one medium to another. These notes are prepared by our panel of highly experienced teachers keeping in mind the level of preparation needed by the students to prepare for class 10 board exams. Reflection and refraction when light hits a surface, one or more of three things may happen. A group of rays of light emitted by a source of light is called a beam of light. The refractive index of medium b relative to a will be a greater than unity b less than unity c equal to unity d zero 6. Laws of reflection i angle of incidence is equal to the angle of reflection. Prism and rainbow formation are the examples of refraction of light. A spherical metasurface with phase discontinuities leads to unconventional light bending compared to standard refractive lenses. If light passes into a medium with a smaller index of refraction, the angle of refraction is larger. This presentation has complete information about the ncert science chapter light reflection and refraction. Reflection and refraction powerpoint presentation class 10 notes edurev is made by best teachers of class 10.
This document is highly rated by class 10 students and has been viewed 7427 times. Students can solve ncert class 10 science light reflection and refraction multiple choice questions with answers to know their preparation level. Light reflection and refraction class 10 notes vidyakul. Ncert solutions for class 10 science chapter 10 light reflection and refraction. Find detailed explanation to all concepts of light for class 10. Pdf reflection and refraction of light from metasurfaces with. Notes of ch 10 light reflection class 10th science. Light is a form of energy that enables us to see things. Reflection and refraction multiple choice questions and. Professionals, teachers, students and kids trivia quizzes to test your knowledge on the.
To locate an image, any two of these three rays can be chosen. Refraction is the bending of light when it travels from one medium to another medium. Re ection and refraction 3 in this equation, n i is the index of refraction of the incident medium, n r is the index of refraction of the refraction medium, and critical is the critical angle for total internal re ection. Some of the worksheets below are light reflection and refraction worksheets. Reflection, is when the light goes back to the previous medium, but changes direction.
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