Light reflection and refraction problem set science primer. Calculate the velocity of light in diamond of refractive index 2. The speed of light in an unknown medium is measured to be 2. Refraction of light and snells law powerpoint with notes cornel style notes to follow powerpoint practice sheet exit quiz java simulation and 4 minute video clip to explain refraction of light. One of the most important parameters that measures optical properties of a medium is the index of refraction. Determine the changes in velocity velocity andor wavelength wavelength of light after refraction. Total internal reflection if the angle of incidence is larger than this, no transmission occurs. Mcq questions for class 10 science light reflection and. Cbse class 10 physics light reflection and refraction. Refraction and snells law reading shen and kong ch. This video on geometric optics contain plenty of examples and practice problems. If the ray travels through water of refractive index 43, find the angle of refraction.
Snells law describes how light bends when traveling from one medium to the next. Refraction part 2 critical angle and total internal reflection. List four properties of the image formed by a plane mirror. Physics 30 lesson 8 refraction of light structured independent. Jan 11, 2018 this video on geometric optics contain plenty of examples and practice problems. A group of rays of light emitted by a source of light is called a beam of light. A didactic reformulation of the laws of refraction of light scielo. The diagrams on the accompanying pdf show a ray of light incident upon an interface.
What will be the deviation produced in the ray, if a ray of light incidents on a plane mirror at an angle of 30. Refraction practice problems ame ate work each of the following problems. Jan 09, 2015 problems and solutions on refraction of light problem and solution a 2 cm high object is placed on the principal axis of a concave mirror at a distance of 12 cm from the pole. Practice problems a laser beam in air enters ethanol at an angle of incidence of 37. As light moves from a material with a low index of refraction to a material with a high index of refraction, the. Apply snells law s law to the solution of problems involving the refraction of light. A line drawn in the direction of propagation of light is called a ray of light. Physics jee main current electricity paper solutions. Our faculty team after a thorough analysis of the last years examination question papers and the latest examination jee advanced format, have framed these questions paper. Refraction of light is the change in direction of a light ray when it travels from one medium to another. The main propagation direction of the light wave is in the zdirection.
Refraction of light in water physics stack exchange. Determine the angle at which the light refracts when it enters the ice cube. On the diagram below show an approximate sketch for the refracted light from the opposite face of the prism. Mastering concepts how does the angle of incidence compare with the angle of refraction when a light ray passes from air into glass at. Light rays travel in different mediums at different speeds. Problems and solutions on refraction of light problem and solution a 2 cm high object is placed on the principal axis of a concave mirror at a distance of 12 cm from the pole. Light reflection and refraction notes for class 10 formulas download pdf. Total internal reflections occurs when a light ray travels from a material with a high index of refraction to a material with a low index of refraction. Heres a question in a paper based on refraction of light. Apply these descriptions to simple quantitative problems. A laser beam in air is incident upon ethanol at an angle of incidence of 37. Prism and rainbow formation are the examples of refraction of light. From te analysis from phase matching from fermats principle of least time total internal reflection and fibers fios.
The basics of reflection, some interesting problems. Light hitting the top of the mirror will have an angle of incidence of 50 o, so the beam will make a 40 o angle with the wall. The incoming light, at a, is a plane wave with the electric field vector. In other cases it is traveling through glass and entering air. Light reflection and refraction chapter wise important. When a light ray is incident on a plane mirror at angle. If light passes into a medium with a smaller index of refraction, the angle of refraction is larger. There is an angle of incidence for which the angle of refraction will be 90. Problems and solutions on refraction of light iit jee. Refraction can be used to show the true make up of white light. In some cases the ray is traveling through air and entering glass.
Reflection and refraction 17 be scattered away from its original direction figure 2. Refraction of light simone zuccher february 4, 20 contents 1 the physical phenomenon 1 2 laws of refraction 2 3 visible light wavelength dispersion 3 4 critical angle and total internal re. If, as the light travels through the new material, the index of refraction continues to increase, the light ray will refract more and. On each diagram, sketch the approximate path of the light in the second medium.
Light reflection and refraction class 10 mcq with answers pdf question 1. Cause of refraction is change in speed of light while entering a different medium. We shall try to understand in this chapter the reflection of light by spherical mirrors and refraction of light and their application in real life situations. The colours of the rainbow are seen to exit instead of the white beam. Prepared by teachers of the best cbse schools in india. The light ray will graze along the rod, if it gets incident on rod at ciritical angle and will get reflected internally as shown in the figure above. Download free printable worksheets physics pdf of cbse and kendriya vidyalaya schools as per latest syllabus in pdf, cbse class 10 physics worksheet lightreflection and refraction practice worksheets for cbse students. In vacuum, for example, light travels at the speed of 3.
All the same angles are involved for light hitting the bottom of the mirror, except now the floor is. When problem solving for refraction, we usually ignore the reflected ray. The white light enters, gets refracted and then when exiting the prism gets refracted again. Numerical problems on refraction of light numerical problem 1 the refractive index of a material is 1. Light travels from air into an optical fiber with an index of. It is defined as the ratio of the speed of light in vacuum 3. Aug 06, 2016 total internal reflections occurs when a light ray travels from a material with a high index of refraction to a material with a low index of refraction. Light reflection and refraction problem set the following questions test understanding of concepts in the light reflection and refraction interactive illustration. Light reflection and refraction notes for class 10 download pdf.
Problems and solutions on refraction of light iit jee and. Oct 01, 2019 important question for class 10 science light reflection and refraction pdf will help you in scoring more marks this consists of 1 mark questions, 3 mark numericals questions, 5 marks numerical questions and previous year questions from light reflection and refraction chapter. When light hits the interface between a medium with a larger index of refraction and a medium with a smaller index of refraction i. Find the critical angle of the glass for both violet and red light.
Jan 07, 2020 students can solve ncert class 10 science light reflection and refraction multiple choice questions with answers to know their preparation level. This scattering is caused by the interaction of light with small particles, even atoms or molecules, within the material. Class 10 science mcqs chapter 10 light reflection and refraction. These basic concepts will help us in the study of some of the optical phenomena in nature. Light in air is incident upon a piece of crown glass at an angle of. Science class 12 physics india ray optics and optical instruments refraction at plane surfaces. The scattered light goes off in many different directions, and may be scattered again and again before it is finally absorbed. The fastest that light can travel is in a vacuum c 3. It is formed at the same distance behind the mirror as the object is in front of the mirror.
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