7.0 light, colour and sight
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This document summarizes the formation of images using plane mirrors and convex and concave lenses. It describes the key characteristics of images formed by each, including whether images are virtual or real, erect or inverted, and magnified or diminished. The document also defines important optical terms used to describe the location and properties of objects and images in a lens system, such as object distance, image distance, optical center, principal axis, and focal point.
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Microscopes and telescopes both consist of two converging lenses contained in a tube. What is
the difference in set-up of the two lenses between a microscope and a telescope? The rearview
mirror on a truck warns the user that objects may be closer than they appear. What kind of mirror
is being used, and why was that type selected? Why does a clear stream always appear to be
shallower than it actually is? Discuss the type of aberration involved in each of the following
situations. (i) The edges of the image appear reddish. (ii) The image cannot be clearly focused.
A baby fish has his eyesight tested and is found to be myopic. His father wants to make a set of
glasses to correct for this problem. Since fish live under water, the father fish will make the
glasses out of a very thin clear plastic bag which is filled with air (n = 1.000). What type of lens
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light?
Solution
In refracting telescopes, there are typically two convex lenses. One lens acts as the objective
lens: this lens gathers light from faraway objects and forms a real, inverted image of the object at
its focal point. A second lens, called the eyepiece, is positioned such that the image formed by
the objective lens is at its focal point. When an observer looks through the eyepiece with a
relaxed eye, they are able to see an object of the image, formed at infinity. Microscopes are used
to look at magnified images of small objects. A simple microscope (a magnifying glass)
consists of a single convex lens. The lens is held close to the object so that the object is between
the lens and its focal point. When viewed from the other side of the lens, a magnified, virtual,
upright image is seen. The compound microscope is the most common type of microscope used
in laboratories. With these microscopes, an objective lens is used to create an inverted, real
image of the object. Using the eyepiece, the image is magnified. In this sense, its operating
principles are similar to that of a refracting telescope. The rear view mirror is a convex mirror
which forms a virtual and erect image of the object which is smaller in length than the object.
Because the image formed is smaller in length, it appears to be farther away and hence, the
warning written on it. This is because of the phenomenon of refraction of light as it crosses the
medium of water(refractive index greater than that of air). As the light ray travels from
water(denser medium) to air(rarer medium), the light ray bends away from the normal and the
image of the bottom of the stream seems to be raised and hence, the stream appears to be
shallower. a) In optics, chromatic aberration (CA, also called chromatic distortion, and
spherochromatism) is an effect resulting from dispersion in which there is a failure of a lens to
focus all colors to the same convergence point. It occurs because lenses have different refractive
indices for differentwavelength.optical instrument. Science physics grades 1-4
optical instrument. Science physics grades 1-4HanHyoKim
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This document provides information about optical instruments and how images are formed using different types of mirrors and lenses. It defines flat mirrors, concave mirrors, convex mirrors and how they form virtual or real, upright or inverted images. Concave mirrors are described as converging while convex mirrors diverge. The document also discusses ray diagrams to show image formation and provides examples of images formed by concave and convex mirrors. Common optical instruments like cameras, microscopes, magnifying glasses, eyeglasses, telescopes and binoculars are listed and the document outlines how each works.Sesi坦n de Laboratorio 6: Lentes pticas
Sesi坦n de Laboratorio 6: Lentes pticasJavier Garc鱈a Molleja
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Laboratory session in Physics II subject for September 2016-January 2017 semester in Yachay Tech University (Ecuador). Topic covered: optics, lenses, convergence, divergence, eye, abnormality
Based on Bruna Regalado's workReflection ray optics light chapter
Reflection ray optics light chapterAbishekThiyagarajan
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reflection light chapter ncert class 7 and 8 reflection ppt light chapter ppt on reflection part of light chapter class7 and 8
presentation on lens
presentation on lensKiran Dhungana
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This document describes an experiment to study the nature and size of images formed by a convex lens. It introduces key lens terminology like focal length, radius of curvature, and object/image distance. The objective is to determine the rough focal length of a convex lens and observe the real, inverted images formed as the object position is varied. The methodology, apparatus, procedure, observations and precautions are outlined. Real images ranging from diminished to magnified are expected as the object moves from infinity to the focal length.Quality assessment of 3 d
Quality assessment of 3 dSumit Raut
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This document discusses quality assessment of 2D and 3D images. It defines image quality assessment as creating algorithms to gauge the perceived quality of visual stimuli as judged by human observers. There are two types of quality assessment: objective and subjective. Objective algorithms are categorized as full-reference, no-reference, and reduced-reference. The document outlines various parameters for 2D image quality assessment and discusses how 3D images are created using depth cues. Popular 3D quality metrics like SSIM and UQI are also mentioned.Stereoscopic Imaging
Stereoscopic ImagingCharanjeet Singh
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This ppt contains all the details of Stereoscopic imaging. It includes from history, introduction, its working technique, 3D viewers, 3D cameras, future scope, advantages, disadvantages. In all, its the complete stuff that can satisfy anyone.Handout optik-geometri-english
Handout optik-geometri-englishsupraptounnes
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This document discusses geometric optics and image formation using mirrors and lenses. It provides definitions of real and virtual images and describes the laws of reflection and refraction. Equations for spherical mirrors and thin lenses relating the object and image distances are derived. Ray diagrams illustrate how flat and curved mirrors and lenses form real or virtual, upright or inverted images depending on the position of the object. Sign conventions are established for specifying distances, focal lengths, and image orientations.
Sci 1010 chapter 7
Sci 1010 chapter 7stanbridge
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This document provides an overview of key concepts related to light and optics, including reflection, refraction, spherical mirrors, lenses, the human eye, polarization, and diffraction. It includes definitions of technical terms, descriptions of phenomena such as the laws of reflection and refraction, explanations of how ray diagrams are used to determine image characteristics, and examples of applications including corrective lenses and polarized sunglasses.QUALITATIVE-CHARACTERISTICS-OF-IMAGES.pptx
QUALITATIVE-CHARACTERISTICS-OF-IMAGES.pptxmantilejoshua05
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This document discusses the qualitative characteristics of images formed by mirrors and lenses. It defines key terms like normal line, angle of incidence, focal point, and magnification. It describes the properties of plane mirrors, concave mirrors, and convex mirrors. Real images are formed when light rays converge after reflection, while virtual images are formed when rays appear to diverge. The magnification equation relates the height of the image to the height of the object and their distances from the mirror. Sample problems demonstrate how to calculate image height, magnification, and object distance using this equation.Light - Part 1
Light - Part 1Gurudatta Wagh
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1) The document provides information about plane mirrors, spherical mirrors, lenses, and their properties. It defines concepts like focal length, radius of curvature, principal axis, etc.
2) Rules for drawing ray diagrams and determining the nature, position and size of images formed by concave mirrors and convex lenses are presented.
3) Formulas for a spherical mirror (the mirror formula) and a lens (the lens formula) that relate focal length, object distance and image distance are defined.3D Stereoscopic Filmmaking
3D Stereoscopic FilmmakingAnimation Courses, Ahmedabad
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3D stereoscopic filmmaking is a technique for creating the illusion of depth in image using stereopsis for binocular vision. 7.0 light, colour and sight
- 1. 7.1The formation of images by plane mirrors and lenses 7.2The formation of images by optical instruments 7.3 Light dispersion 7.4 Light scattering 7.5The addition and subtraction of coloured light 7.6The appearance of coloured objects 7.7 the effect of mixing pigments 7.8The importance of colour in daily life 7.9 Appreciating the benefits of various types of optical instuments to mankind
- 2. 7.1 Formation o images by a plane mirror and lenses. The characteristics of the image formed: 1. Virtual 2. Laterally inverted (sonsang sisi) 3. Size of images formed is same as the object 4. The distance between image formed and object is same A) formation of images by a plane mirror
- 3. B) formation of images by of convex lens and concave lens
- 4. Imagesformedbyconcave(cekung)lens The characteristics of the image formed: 1. Virtual 2. Erect(tegak) 3. Diminished(mengecil)
- 5. Images formed by convex(cembung) lens The characteristics of the image formed for near object: 1. Virtual 2. Erect(tegak) 3. Magnified (membesar) The characteristics of the image formed for distant object : 1. Real 2. Inverted(sonsang) 3. Diminished(mengecil)
- 6. B) Optic terms Object distance-distance between the object and the lens Image distance-distance between the image and the lens Optical centre-point at the centre of lens Principle axis-straight line that passes through the optical centre and is perpendicular to the lens Focal point- is the point where a light ray parallel to the principle axis focuses on after passing through the lens.
- 7. Steps forDrawingRayDiagrams Lets practice!!