Image 1 is a single reflection image from mirror 1. 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. Lenses and mirrors activity after using reference materials to answer questions about lenses and mirrors, students will label each shape as convex or concave. Spherical mirrors problems the physics hypertextbook.
Start studying vocabulary for physics mirrors and lenses. Mirrors and lenses both have the ability to reflect or refract light. Different text books may use different sign conventions. Just how much do you know about the different types of lenses and mirrors. Finally, the magnification of a mirror or lens is given by the formula hh ss where h is. You can skip questions if you would like and come back. In this science printable, students will also define hyperopia and myopia and identify the type of lens. Suppose a certain persons visual acuity is such that he can see objects clearly that form an image 4. The development of zeldovichs ideas on the cosmological impact of particle theory is discussed in the context of cosmoparticle physics, studying fundamental relationship of macro and microworlds. In order to understand mirrors, we first must understand light. Light rays follow a complex route as they encounter mirrors or pass through a. Should that not be a minus sign on the left hand side. In this video i will introduce the objects, focal points, images of the converging and diverging lenses, and concave and convex mirrors. Lens is a transparent medium which is formed by joining two pieces of spherical glass.
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 law of reflection says that when a ray of light hits a surface, it bounces in a certain way, like a tennis ball. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Typically such a mirror is not a complete sphere, but a spherical cap a piece sliced from a larger imaginary sphere with a single cut. There are two types of lenses, and they each change the perspective of how things look. This book provides an introduction to the eld of optics from a physics perspective. Researchers have, however, created thin, structured sheets that, when placed over a normal flat mirror, disturb the passage of light and cause it to be reflected at any desired angle 1.
Youngs doubleslit diffraction experiment for light and some laser tricks, too doc physics duration. May 07, 2020 just how much do you know about the different types of lenses and mirrors. Newtonian physics includes both action at a distance e. Mirrors, which have curved surfaces designed to reflect rays, also form images. Light is of great significance in the realm of physics. Instore mirrors that capture a large view of the store. The focal length, f, is the distance between f and the lens. A mirror will have only one focal point, which is in front of the mirror.
Lenses in optics applications types of lenses physics. Physics mirrors are where light can be reflected and reconvened to form images. Homework resources in mirrors and lenses physics science. The same sort of rules apply, just with a few modifications. General physics ii course lecture notes section xii.
A person is sitting in front of two mirrors that intersect at a right angle. 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 goal of the experiment is to be able to analyze ray diagrams so as to determine fundamental properties of image formation. 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.
The intersection of at least two reflected rays give the. 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. Lenses and mirrors activity physics printable 6th12th. As of 2010, mirrors and lenses are so prevalent that most people use them every day, regardless of whether or not they consciously. Sells, elementary classical physics allyn and bacon, boston, 1973, second edition, vol. Use raytracing techniques to locate images formed by thin lenses. Mirrors are typically flat, metalcoated sheets that reflect all incoming light waves at an angle that is equal but opposite to the incident angle. In this science printable, students will also define hyperopia and myopia and identify the type of lens used to correct each condition. It bends light further away in the middle, more like the inside of a bowl. For each object position, answer the following questions about the.
After using reference materials to answer questions about lenses and mirrors, students will label each shape as convex or concave. Real image is formed when the light reconvenes and always inverted i. Mirrors and lenses physics science homework resources. These laws of reflection are applicable to all types of reflecting surfaces. Then, cab and fab are approximately right triangles with the same opposite side ab. Apply the thinlens equation and the mirror equation to determine the focal length of a converging lens and mirror. It curves light away from its middle, like the outside portion of a bowl. This type of mirror will produce only smaller and virtual images.
Thc letters of a book seen through a concave lens appears smaller in size. How high is the image of the print on the retina when the book is held 30. 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. One of the easiest shapes to analyze is the spherical mirror. Mar 06, 2015 mirrors are typically flat, metalcoated sheets that reflect all incoming light waves at an angle that is equal but opposite to the incident angle. It is shown in most basic books on optics see references listed at end of this module that image. In addition, for spherical mirrors the focal length is half the radius of curvature of the reflecting surface. Using a ruler or other straight edge and the ray tracing methods described in this section, locate and draw the image of the pencil. Note the location, orientation upright or inverted, relative size larger or smaller than object. Lenses remembering the basics of mirrors puts you half ways towards fully understanding lenses as well. Rapid development of optoelectronic devices and laser techniques poses an important task of creating and studying, from one side, the structures capable of effectively converting, modulating, and recording optical data in a wide range of radiation energy densities and frequencies, from another side, the new schemes and approaches capable to activate and simulate the modern. So lets see how it goes, suppose that ive got an object out here in air and then ive got a piece of glass thats curved outward like this in a convex way. 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.
Biconvex glass lens, spherical concave mirror, meter ruler, optical bench, lens holder, selfilluminated object generally a vertical arrow, screen. 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. Two types of image formed by mirrors are real image and virtual image. 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. Two different types of mirror are concave and convex mirror with different properties. This property has put mirrors and lenses in use for centuries. With a converging lens, paraxial rays that are parallel to the principal axis converge to the focal point, f. It focuses primarily on the wave and ray descriptions of light, but also includes a brief introduction to the quantum description of light. In 1678 the great dutch physicist christian huygens 16291695 wrote a treatise. Lenses and mirrors a lens is a transparent device with two curved surfaces, usually made of glass or plastic, that uses refraction to form an image of an object. We use your linkedin profile and activity data to personalize ads and to show you more relevant ads. Reflection from spherical mirrors kindle education. Choose your answers to the questions and click next to see the next set of questions.
A lens is a curved piece of glass or plastic designed to refract light in a specific way. 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. Lecture notes optics pdf 57p this note covers the following topics. 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. Jun, 2008 we use your linkedin profile and activity data to personalize ads and to show you more relevant ads. Image 2 is a single reflection image from mirror 2. Or should it be a plus sign for mirrors and minus for lenses. The image distance for a plane mirror is always equal to the object distance because the magnification is 1. 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.
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. Physics to find out more about mirrors and lenses, visit the glencoe science. Formed by plane mirrors number of images formed by two inclined plane mirrors rotation of a plane mirror minimum size. Light reflection and refraction notes for class 10. Image 3 is a double reflection image from mirrors 1 and 2. The incoming angle, called the angle of incidence, is always equal to the angle leaving the surface, or the angle of reflection. 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. We shall confine our discussion in this chapter to such lenses. In both cases, the object distance is less than the focal distance. There are two types of lenses, and they each change the perspective of how. The most apparent distinction between mirrors and lenses are that mirrors reflect light rays light bounces back while light rays are refracted passthrough through a lens. It is a lens which is thinner at the centre and thicker at the edges.
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