A specular reflection, such as what you see in a mirror or a polished. Light reflection and refraction class 10 mcq with answers pdf question 1. Consider the two mirrors solid lines shown at right at an angle of 120 degrees to each other. Jan 07, 2020 students can solve ncert class 10 science light reflection and refraction multiple choice questions with answers to know their preparation level. Unless the mirrors are very large, it is hard to see into an opening that is less than 45. Diffraction gratings work both for transmission of light, as in, and for reflection of light, as on butterfly wings and the australian opal in or the cd pictured in the opening photograph of this chapter. Remember, diffraction is when light passes through a small opening and starts to spread out. Different approaches for teaching the reflection of light specular vs diffuse reflection.
The scattered light goes off in many different directions, and may be scattered again and again before it is finally absorbed. The amount of light that is reflected depends on the material and nature of the surface on which light falls. In reality, when light makes multiple reflections between two parallel surfaces, the multiple beams of light generally interfere with one another. Magnification produced by a rear view mirror fitted in vehicles a is less than one b is more than one c is equal to one d can be more than or less than one depending upon the position. An interference pattern is created that is very similar to the one formed by a double slit see. It makes an angle of 30 o degrees with the surface of the block. You will get a different set of questions each time you attempt this quiz. Common examples include the reflection of light, sound and water waves. The angle of incidence is equal to the angle of reflection, and. Free pdf download best collection of cbse topper notes, important questions, sample papers and ncert solutions for cbse class 10 physics light reflection and refraction. Jan 16, 2016 in this video you can find about multiple reflection of light.
We know that when light reflects off a plane mirror, the image appears leftright reversed. As the angle of incidence is increased for a ray incident on a reflecting surface, the angle between the incident and reflected rays ultimately approaches what value. However, to simplify this discussion, it will be limited to light. Mar 01, 2014 if a ray of light incident on a concave mirror is parallel to the principal axis, then after reflection it will. A transparent body allows almost all the light to pass through it and reflects very little light. Under what condition in an arrangement of two plane mirrors, incident ray and reflected ray will always be parallel to each other, whatever may be angle of incidence. An interesting thing happens if you pass light through a large number of evenly spaced parallel slits, called a diffraction grating. When light strikes a perfectly reflecting surface, such. These laws of reflection are applicable to all types of reflecting surfaces. Pdf simple, stable, and compact multiplereflection optical cell for. As the angle of incidence is increased for a ray incident on a reflecting surface, the angle between the incident and. Mirror, mirror on the wall eight lessons on mirrors.
Reflection refraction multiple choice identify the letter of the choice that best completes the statement or answers the question. Students and parents can download free a collection of all study material issued by various. In figure 3a we caught this reflection on a piece of paper. The bouncing off of light at a surface is called reflection. An object at a distance of 30 cm from a concave mirror gets its image at the same point. If a ray of light incident on a concave mirror passes through c, then after reflection it will. A travel parallel to the principal axis b pass through the focus c pass through the centre of curvature d pass through the pole.
On the other hand, when we shine the light of a laser pen on paper, the light spot can be. Professionals, teachers, students and kids trivia quizzes to test your knowledge on the. These light multiple choice questions with answers are important for competitive exams like iit, jee, neet, aiims, jipmer and board exams etc. We can see that the image is created at the extension of the reflected rays. List four properties of the image formed by a plane mirror.
This is called specular reflection but with children we just call it mirror reflection figure 2a and 3a. Free pdf download of cbse class 10 science chapter 10 light reflection and refraction multiple choice questions with answers. Draw ray diagrams showing the image formation by a convex mirror when an object is placed at infinity 2. Conceptual example 2 multiple reflections a person is sitting in front of two mirrors that intersect at a right angle. The scattering of light by uneven surfaces is known as. Mcq on reflection and refraction of light with answers pdf question 5. These multiple reflections can lead to multiple images. Osa the reflection of light from glass with double and.
Reflection and refraction 17 be scattered away from its original direction figure 2. If light passes into a medium with a smaller index of refraction, the angle of refraction is larger. Total internal reflection if the angle of incidence is larger than this, no transmission occurs. Multiple choice this activity contains 15 questions. A smooth and a highly polished surface such as a shiny stainless steel surface or a mirror reflect almost all the light that falls on it. These need to be small enough around 5 x 7cm to fit in the periscope.
Take the torch and shine it on various objects in the classroom, including. The incident ray, the reflected ray and the normal all lie in the same plane. If a ray of light incident on a concave mirror is parallel to the principal axis, then after reflection it will. This also can be interpreted as a reflection from a single surface of a hypothetical medium, the reflected components having amplitudes rp and rs and phases. The to and fro movement of light in the same medium after striking an opaque surface is called reflection. Since reflective surfaces such as mirrors are very good at preserving the intensity of light in a reflection, a single source of light can be reflected multiple times. With the help of ray diagrams, explain the difference between regular and irregular reflection. A single image is formed when an object is placed in front of a mirror. It is formed at the same distance behind the mirror as the object is in front of the mirror. A ray of light travels from air into a glass block as shown. Definition, laws of reflection and multiple reflections explained with diagram. These ideas are stolen from a workshop that combined institute of physics tlcs teaching and learning coaches and pncs physics network coordinators when i was. When a light ray strikes a surface separating two media with different optical properties, part of the light energy is reflected back to the media where it coming from. Reflection of light, laws of reflection, new formulation, vectors, education.
Multiple reflections in an approximately parallel plate. Reflection there are three general types of reflection. Download cbse class 7 science mcqslight in pdf, chapter wise multiple choice questions mcqs for science, cbse class 7 science mcqslight. Light enables us to see objects from which it comes or from which. Therefore, you can easily make use of this online pdf converter to turn pdf documents into various commonlyused files or create a pdf. As we draw back from a mirror we recede further into it, because the lightpath gets longer the further we, or any reflected object, is from the mirror. A diffraction grating can be manufactured by scratching glass with a sharp tool in a number of precisely positioned parallel lines, with the untouched regions acting. Physics 100 multiple choice questions with answer for ssc. A 40 b 50 c 80 d 20 if the angle of incidence of a ray of light is 40, the measure of the angle between the incident ray and the reflected ray is. Light is a form of energy which enables us to see objects and the straight line along which it travels is called ray of light. This scattering is caused by the interaction of light with small particles, even atoms or molecules, within the material. How well a surface reflects light depends upon the nature of the surface.
Mcq quiz on reflection of light multiple choice questions and answers on reflection of light mcq questions on reflection of light objectives questions with answer test pdf for interview preparations, freshers jobs and competitive exams. A person is sitting in front of two mirrors that intersect at a right angle. There are still only two light rays that actually go through the slits, but as soon as they pass through they start to diffract. Fresnels equations for reflection and transmission incident, transmitted, and reflected beams boundary conditions. The fresnel equations or fresnel coefficients describe the reflection and transmission of light or electromagnetic radiation in general when incident on an interface between different optical media. Class 10 reflection of light test paper with solutions. A multiple internal reflection mir infrared monitoring system based on the two prism coupling geometry has been developed for the measurement of silicon wafer surfaces and interfaces. New didactic formulation of the laws of reflection of light scielo. Mcq questions for class 10 science with answers was prepared based on latest exam pattern.
Cbse class 7 science mcqslight, multiple choice questions. Lets consider a plane mirror as shown in the figure above. Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated. Revision worksheets, sample papers, question banks and easy to learn study notes for all classes and subjects based on cbse and ncert guidelines. In diffuse reflection, light is reflected in random directions. For the reflection of light from a thin film on glass, that is, from two boundary surfaces, the generalized fresnel equations are. When a strong beam of light is passed through a colloidal solution, the light will a be scattered b pass unchanged c be absorbed d be reflected answer. Image 1 is a single reflection image from mirror 1. Whan a number of rays starting from a point meet at another point after reflection or refraction, the second point is called the image of the first point.
The law of reflection says that for specular reflection the angle at which the wave is incident on the surface equals the angle at which it is reflected. Students can solve ncert class 10 science light reflection and refraction multiple choice questions with answers to know their preparation level. From this, we know that the triangles created by the light rays are equal on both sides. In this paper, we describe an original arrangement for ir spectroscopy, based on the light propagation in the substrate by multiple internal reflection mir. These can be photographically mass produced rather cheaply. Thin film interference 12 n1 n2 n3 n1 pdf mcq questions on reflection of light and refraction of lights class 10th class 10 physics chapter 4 reflection of light 1 marks multiple choice questions mcq important. The balancing of light from a surface is called reflection. Reflection of light is the process of sending back the light rays. The new setup we describe here increases the sensitivity of ir spectrometry by at least two orders of magnitude. Note the appearance and orientation of each of the multiple reflections that you ob. Reflection of light test paper with solutions fill in the blanks 1. Differentiate between the reflection of light from a plane mirror and that from a plane sheet of paper.
Image 2 is a single reflection image from mirror 2. In addition to their use as novelty items, diffraction gratings are commonly. The entire ncert textbook questions have been solved by best teachers for you. 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. Reflectionrefraction multiple choice identify the letter of the choice that best completes the statement or answers the question.
The images, i 1 and i 2, form exactly on the opposite side of each mirror, the same distance from the mirror, just as you would expect for reflection from a single. Reflection of light multiple choice questions and answers. Professionals, teachers, students and kids trivia quizzes to test your knowledge on the subject. Classical configurations such as ir transmission at normal incidence are not sensitive enough to enable either nanometric layers or surfaceinterface contamination analysis.
Pdf a new type of multiplereflection optical cell is presented. Lightpdf can convert pdf files with high efficiency, and supports for microsoft office formats, image formats jpg, png, and many more. Reflection and refraction multiple choice questions and. When light strikes a perfectly reflecting surface, such a mirror for example, all the light energy is reflected. Refraction and reflection are the phenomena which enable the focusing of light by lens and mirror. The reflection of light from glass with double and multiple films. Sketch the the incoming and reflected light beams, showing the relationship. An opaque body absorbs some of the light that falls on it and reflects the remaining light. 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. Therefore, you can easily make use of this online pdf converter to turn pdf documents into various commonlyused files or create a pdf from a wide range of document formats. If a ray of light is incident on a surface makes an angle of measure 40 with the surface, then its angle of reflection is of measure.
Measurements of the fraction of light reflected and transmitted through a parallel plate of dielectric material can be used to determine its. Class 10 science mcqs chapter 10 light reflection and refraction. The diagram shows a ray of light being reflected by a plane mirror. Mcq questions for class 10 science light reflection and. Cbse 10, physics, cbse light reflection and refraction, mcq. The first device is usable with a laser in visible light.
When light falls on an object, some of it bounces off the object. There is an angle of incidence for which the angle of refraction will be 90. If light is a wave, everything starts the same way, but results we get are very different. Reflecting light light preparation for the activity reflecting light you will need the torch, the book, the mirror, and the small mirrors. Light is a form of energy without it we cannot see things around us. If a reflected light ray is reflected again on being incident on another surface, it is termed multiple reflections. A ray of light strikes a polished surface at an angle of 37. Multiple reflection of light is the reflection of light back and forth several times between reflecting surface.
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