After refection from the mirror the rays appear to be converging at a distance equal to the distance of i1 behind the mirror. If the object was very far away, the image will form at. Characteristics of light light waves are electromagnetic waves, whose nature is transverse. Determination of focal length of a converging lens and mirror objective. The light rays leave the mirror or lens on the out side. Plane mirrors revisited in our previous work on reflection, we saw that for plane mirrors the image of an object always exists within the mirror we can never touch or project the image since it does. In class you have studied the physics of thin lenses and spherical mirrors.
The primary goals are to understand the relationship between image. Choose your answers to the questions and click next to see the next set of questions. When you place an object in front of a mirror, you see the same object in the mirror. Mirrors are made by putting a thin layer of silver nitrate or aluminium behind a flat piece of glass. For a mirror or lens, the light rays come into the optical device from one side. Consider a sound wave since it is easier to visualize.
Summary of mirrors and lenses department of physics. The primary goals are to understand the relationship between image distance, object distance, and image scale. When you shine with a flashlight on a mirror, you will see a light spot of reflected light on the ceiling or on the wall. 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. As all who have ever tried lens and mirror calculations know, the biggest difficulty we have to face is that of the.
A upright, magnified and real b upright, the same size and virtual c inverted, demagnified and real d inverted, magnified and virtual. Physics lab ii thin lenses and concave mirror f1 page 2 of 6 5. Jun, 2008 we use your linkedin profile and activity data to personalize ads and to show you more relevant ads. The bausch and lomb optical company has reported completion of a special project of nearly two years duration for the astrophysics laboratory of the vaticans observatory. 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 purpose of this lab is to introduce students to some of the properties of thin lenses and mirrors. Hold a piece of paper or cardboard in front of the mirror, and move it back and forth to focus the image. Optics usually describes the behaviour of visible, ultraviolet, and infrared light. When you move the flashlight, the light spot will move. A mirror is a reflective surface that light does not pass through, but bounces off of and this produces an image.
Concave mirrors when a real object is placed on one side of the principal axis of a concave spherical mirror at the center of curvature, a real, inverted image of the same size is formed on the. What does a negative image distance indicate for a mirror and lens what does a negative focal point indicate for a mirror and lens what does a negative image height indicate for a mirror and lens what does a negative magnification indicate for a mirror and lens. At, we provide access to the bestquality, bestvalue private tutoring service possible, tailored to your course of study. The principal focus lies midway between the vertex v and the center of curvature c of the mirror. Many people wake up putting on eyeglasses or contacts. We will look at the creation of images resulting from the use of mirrors and lenses, and we will also consider how fiber optic cables work. Physics 30 lesson 7 optics curved mirrors refer to pearson pages 656 to 665.
Using a ruler or other straight edge and the ray tracing methods described in this section, locate and draw the image of the pencil. Use the printable html button to get a clean page, in either html or pdf, that you can use your browsers print button to print. We use your linkedin profile and activity data to personalize ads and to show you more relevant ads. Light parallel to the principal axis a converges toward f after reflection from a concave mirror, and b diverges from f after reflection from a convex mirror. View notes mirrors and lenses from physics 8b at university of california, berkeley. 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. Just how much do you know about the different types of lenses and mirrors. Understanding mirror images and lenses universalclass. Biconvex glass lens, spherical concave mirror, meter ruler, optical bench, lens.
I then place the center of figure on the second lens, and use the image of the first as if it were the position of the object. Biconvex glass lens, spherical concave mirror, meter ruler, optical bench, lens holder, selfilluminated object generally a vertical arrow, screen. Rays from the object first refract through the lens, reflect from the mirror and then again refract though the lens to from i2. Jun 14, 2012 i am having trouble understanding what signs mean in regards to lenses and mirrors. Should that not be a minus sign on the left hand side. Given an object and a particular sort of mirror, we will learn how. Spherical mirrors images to focus an image of a distant object. The same sort of rules apply, just with a few modifications. When i have a system of n lens, i apply the following principle. The laws of reflection and refraction allow us to describe electromagnetic waves using rays which are either reflected by a surface or refracted when they cross the surface into a different material. I am having trouble understanding what signs mean in regards to lenses and mirrors.
Shown is a hemispherical view of a sound wave emitted by a pulsating sphere. 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. Determination of focal length of a converging lens and mirror. Apply the thinlens equation and the mirror equation to determine the focal length of a converging lens and mirror. Scribd is the worlds largest social reading and publishing site. 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. Prereouisites before you begin this module, you should be able to. Or should it be a plus sign for mirrors and minus for lenses. Real image is formed when the light reconvenes and always inverted i. Keep in mind that for an object to be considered a lens it must be made of a transparent material. Mirror, mirror on the wall eight lessons on mirrors. An activity to find the relationship between the location of an object and the location of the image. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
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. Spherical lenses problems the physics hypertextbook. Physics notes for class 12 chapter 9 ray optics and. I place the center of figure on the first lens, and calculate its image. Choose from 500 different sets of and lenses physics mirrors flashcards on quizlet. Figure 33b shows the reflection of several light rays at a curved mirror surface. Two types of image formed by mirrors are real image and virtual image. For plane mirrors, the reflected image a virtual image and object are along the same line, perpendicular to the reflective surface. They will not understand the physics of light, but will begin the process of becoming familiar with some of the bizarre things light can and cannot do. F of the mirror, pro vided that the diameter of the mirror is small compared to its radius of curvature r. Lens and mirror basics ray diagrams delsea 1st year.
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. Mar 29, 2014 the mirror equation can be rewritten to give objdist imagedist times focallength all over imagedist focallength. Plane mirrors revisited in our previous work on reflection, we saw that for plane mirrors the image of an object always exists within the mirror we can never touch or project the image since it does not exist as something outside of the mirror. Tes global ltd is registered in england company no 02017289 with its registered office. Objectives mirrors o distinguish between concave and convex mirrors. 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. There are two types of lenses, and they each change the perspective of how things look. Lenses remembering the basics of mirrors puts you half ways towards fully understanding lenses as well. Measure the approximate focal length of the mirror by focusing a distance object onto a screen and measuring the distance from the mirror to the screen. Worksheet and answers this is the work done on may 31, 2012.
Mar 26, 2020 just how much do you know about the different types of lenses and mirrors. In both cases, the object distance is less than the focal distance. Two different types of mirror are concave and convex mirror with different properties. Once youve got that the answer follows from the geometry of reflection or refraction by properly shaped mirrors and lenses. In this video i will introduce the objects, focal points, images of the converging and diverging lenses, and concave and convex mirrors. Physics mirrors are where light can be reflected and reconvened to form images. This page wont have buttons or ads, just your puzzle. Unscramble the shaded letters to find the name of the man who placed a mirror on the moon so that scientists can measure its distance from the earth. The goal of the experiment is to be able to analyze ray diagrams so as to determine fundamental properties of image formation. Apply the thinlens equation and the mirror equation to determine the focal length of a converging biconvex lens and mirror. Question an object is located on the optical axis and a distance of 8 cm from a thin conver ging lens having focal length 10 cm. In the two situations shown, the mirrors have the same focal lengths, and the object distance from the mirror to the.
You can skip questions if you would like and come back. Measure the length of some straight part of the object and the length of the. An optical system mirrors or lenses can produce an image of the object by redirecting the light. The pdf format allows the web site to know how large a printer page is, and the fonts are scaled to fill the page.
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. The image distance for a plane mirror is always equal to the object distance because the magnification is 1. Photometry is a branch measurement of light energy. Learn and lenses physics mirrors with free interactive flashcards. The task involved production of four identical six. Because light is an electromagnetic wave, other forms of electromagnetic radiation such as xrays, microwaves, and radio waves. During the second refraction, the object is the vertual image i1 formed by the mirror.
The dashed line perpendicular to the mirror is called the normal line, it is an imaginary line. Mir ror s and lenses click er questions question p1. A central equation in optics relates the focal length, object distance and image distance for a thin lens or mirror. Physics 41 lab 5 determination of focal length of a converging lens and mirror objective. Physics notes for class 12 chapter 9 ray optics and optical instruments light light is a form of energy eyes. Light can be controlled by lenses, prisms, and mirrors.
When an object is placed in front of a plane mirror the image is. Lens and mirror basics ray diagrams delsea 1st year physics. Physics assignment help, explain mirror lens equation, q. Physics stack exchange is a question and answer site for active researchers, academics and students of physics.
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