In this trivia questions quiz, you will get to learn some more about the different lenses and mirrors and how they differ from each other. The distance between the focal point and the lens is 8. Two different types of mirror are concave and convex mirror with different properties. Scribd is the worlds largest social reading and publishing site. Real images can be formed by concave, convex and plane mirrors d real images result when the reflected light rays diverge.
Mirrors and lenses both have the ability to reflect or refract light. It is easiest to concentrate on only three types of imagesthen remember that concave mirrors act like convex lenses, whereas convex mirrors act like concave lenses. In this video i will introduce the objects, focal points, images of the converging and diverging lenses, and concave and convex mirrors. Keep in mind that for an object to be considered a lens it must be made of a transparent material that has an index of refraction higher than air. Two types of image formed by mirrors are real image and virtual image. Jun 16, 2016 in this video i will introduce the objects, focal points, images of the converging and diverging lenses, and concave and convex mirrors. Mirrors dont have to be flat, like the circus hall of mirrors mirrors which may improve uncle festers appearance. Note the location, orientation upright or inverted, relative size larger or smaller than object.
Choose from 500 different sets of and lenses physics mirrors flashcards on quizlet. Physics mirrors are where light can be reflected and reconvened to form images. In this science printable, students will also define hyperopia and myopia and identify the type of lens used to correct each condition. Sells, elementary classical physics allyn and bacon, boston, 1973, second edition, vol. Light rays reflect from a mirror at an angle that is twice as large as the angle of incidence. For plane mirrors, the reflected image a virtual image and object are along the same line, perpendicular to the reflective surface. Biconvex glass lens, spherical concave mirror, meter ruler, optical bench, lens holder, self.
In the two situations shown, the mirrors have the same focal lengths, and the object distance from the mirror to the arrow is the same. Because none of the rays actually emanate from the image, it is called a virtual image. The terms concave and convex are from the perspective of the object. The image distance for a plane mirror is always equal to the object distance because the magnification is 1. Stay tuned with byjus to know more about concave convex mirrors, plane mirrors and much more. Image formation by mirrors and lenses physics courses. The incoming angle, called the angle of incidence, is always equal to the angle leaving the surface, or the angle of reflection. As of 2010, mirrors and lenses are so prevalent that most people use them every day, regardless of whether or not they consciously perceive the use. Objects inside focal length of curved mirrorsimage distance in the two situations shown, the mirrors have the same focal lengths, and the object distance from the mirror to the arrow is the same. Using a ruler or other straight edge and the ray tracing methods described in this section, locate and draw the image of the pencil. Circle the letter of each sentence that is true about plane mirrors.
Learn vocabulary, terms, and more with flashcards, games, and other study tools. When light falls on a highly polished surface like a. Find materials for this course in the pages linked along the left. Or should it be a plus sign for mirrors and minus for lenses. Lenses and mirrors activity physics printable 6th12th. Plane mirrors produce rightleft reversed images of objects. In addition, for spherical mirrors the focal length is half the radius of curvature of the reflecting surface. There are two types of lenses, and they each change the perspective of how things look. Just how much do you know about the different types of lenses and mirrors. Lenses remembering the basics of mirrors puts you half ways towards fully understanding lenses as well. When light hits a surface at a low angle like on a lake at. Optics is the branch of physics that studies the behaviour and properties of light, including its interactions with matter and the construction of instruments that use or detect it.
Mirrors and lenses reflection we describe the path of light as straightline rays reflection off a flat surface follows a simple rule. The same strategies are valid for mirrors as for lenses with one qualificationuse the ray tracing rules for mirrors listed earlier in this section. An object of height 8 centimeters is placed 45 centimeters to the left of the lens. Should that not be a minus sign on the left hand side.
They form an enlarged, upright image of a persons face so it is easier to see small details. Homework resources in mirrors and lenses physics science. Geometric optics and introduction to interference ch. Finally, the magnification of a mirror or lens is given by the formula hh ss. Keep in mind that for an object to be considered a lens it must be made of a transparent material. Section summary the characteristics of an image formed by a flat mirror are. The primary goals are to understand the relationship between. Apply the thinlens equation and the mirror equation to determine the focal length of a converging lens and mirror.
For each object position, answer the following questions about the. Mirrors and lenses physics science homework resources. To the eye, the ray seems to come from behind the mirror. The most common nonplane mirrors are spherical mirrors, shaped like a bowl with the reflecting material on either the inside of the bowl or the outside. Use the lensmakers equation to determine the focal length of a thin lens. The three types of images formed by mirrors cases 1, 2, and 3 are exactly analogous to those formed by lenses, as summarized in the table at the end of image formation by lenses. Plane and curved mirrors, lenses, ruler, optical bench. The goal of the experiment is to be able to analyze ray diagrams so as to determine fundamental properties of image formation.
Concave mirrors and convex mirrors image formation, ray diagram. Use the mirror equations to determine location, size, orientation, and nature of images formed with. We use your linkedin profile and activity data to personalize ads and to show you more relevant ads. Each point of an illuminated object emits a continuum of light rays in a range of directions. How can you tell by looking whether an image formed by a. Most mirrors used commercially are made of glass, with the rear surface silvered and then coated with a layer of paint or lacquer for protection. After using reference materials to answer questions about lenses and mirrors, students will label each shape as convex or concave. Types of mirrors figure 1 shows the three types of mirrors we will consider. The primary goals are to understand the relationship between image distance, object distance, and image scale. In both cases, the object distance is less than the focal distance. There are two types of curved mirror convex and concave. Plane mirrors science and mathematics education research group supported by ubc teaching and learning enhancement fund 20122014 department of curriculum and pedagogy a place of mind f a c u l t y o f e d u c a t i o n. Drawing the ray diagrams is an ideal way to illustrate the formation of images by spherical mirrors.
Learn and lenses physics mirrors with free interactive flashcards. Reflection from spherical mirrors kindle education. All of them are segments of spheres centered on a horizontal axis. A light beam source, in air, is incident on a substance of unknown index of refraction. Objectives mirrors o distinguish between concave and convex mirrors.
Spherical mirrors problems the physics hypertextbook. The law of reflection says that when a ray of light hits a surface, it bounces in a certain way, like a tennis ball thrown against a wall. The purpose of this lab is to introduce students to some of the properties of thin lenses and mirrors. But when we look at mirrors with our physics eyes, they become both mysterious and surprising. Because light is an electromagnetic wave, other forms of electromagnetic radiation such as xrays, microwaves, and radio waves. If the object and image are the same distance from the mirror and magnification is 1, then as the object approaches the mirror at a certain speed, the image is approaching the plane mirror at the same speed, therefore you approach the image more quickly than you approach. We use them every day and were never really surprised by what we see unless we happen to wake up to a particularly impressive case of bed head. In principle, electromagnetic waves may have any wavelength, from zero to arbitrarily long. This property has put mirrors and lenses in use for centuries. Lenses and mirrors activity after using reference materials to answer questions about lenses and mirrors, students will label each shape as convex or concave.
Biconvex glass lens, spherical concave mirror, meter ruler, optical bench, lens holder, selfilluminated object generally a vertical arrow, screen. Youngs doubleslit diffraction experiment for light and some laser tricks, too doc physics duration. In order to understand mirrors, we first must understand light. The purpose of the lab is to test the predictions made by the ray diagrams and thin lens equations for real images produced by a converging lens and mirror.
What are the differences between real and virtual images. It bends light further away in the middle, more like the inside of a bowl. When light falls on a highly polished surface like a mirror most of the light is sent back into the same medium. Your image appears to be the same distance behind a mirror as you are in front of it. Geometric optics converging lenses and mirrors physics lab iv objective in this set of lab exercises, the basic properties geometric optics concerning converging lenses and mirrors will be explored. The intersection of at least two reflected rays give the. If you are 3 m in front of the mirror, your reflected image will be located 3 m behind the mirror. Ordinary mirrors reflect light over a broad range of frequencies, but a new mirror design can reflect a single frequency while allowing all others through. Choose your answers to the questions and click next to see the next set of questions. Mirrors are used widely in optical instruments for gathering light and forming images since they work over a wider wavelength range and do not have the problems of dispersion which are associated with lenses and other refracting elements. The same sort of rules apply, just with a few modifications.
The reflection from a plane mirror is a good example of a virtual image. Image formation in a concave mirror place an object before a concave mirror for each of the following object positions shown below and obtain its image. App file and enter the values for the object and image distances. Real image is formed when the light reconvenes and always inverted i. You can skip questions if you would like and come back. Optics usually describes the behaviour of visible, ultraviolet, and infrared light. Stand with the toes of your shoes even with tape on the floor and look at your image in the plane mirror, then have your partner stand behind and to the side of the mirror so that their toes are right next to the image of your toes. It curves light away from its middle, like the outside portion of a bowl.
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