# Refraction Of Light Worksheet With Answers Pdf

y = 5(x+3)+7 2. ( EP B19) • Translucent • Transparent • Opaque K6. Refraction of Light 11. __ Discovery Lab, Refraction and Lenses, ANC Students observe how light behaves as it. If the ray of light in air makes an angle of 30. L p cM Jadpe5 wTiVtChd wInSfGiCnxikttek DG Le 7obm ne wtVroy 4. (1720k) Andrea Zurawski,. When focusing a specimen, you should always start with the _ coarse__ objective. Lysosomes are called suicide sacks. This phenomenon is caused by a change in the speed of the light waves. P O hAyl7l8 Krxi6gkh7tSsY 3rte KsWeSrMvbeodQ. These science worksheets teach kids about the world around them, from atoms to planets and everything in between. It’s worth it to figure them out and get real about them. (Circle the correct answer. How light moves through space has been a question in physics for hundreds of years. The angle of incidence and each index of refraction can be varied. Physics Worksheet Reflection and Refraction Section: Name: Mr. focuses primarily on the wave and ray descriptions of light, but also includes a brief intro-duction to the quantum description of light. What is the index of refraction of a solid in which the speed of light is 1. Therefore, you perceive the candle flame to be located behind the mirror. Download CBSE Class 10 Physics Worksheet - Light-Reflection and Refraction in pdf, questions answers for Physics, CBSE Class 10 Physics Worksheet - Light-Reflection and Refraction - Practice worksheets for CBSE students. Super Gelatin: Teacher Lesson Plan Can gelatin (like Jell-O ®) change the speed of light? Students investigate the refraction properties of gelatin to calculate its index of refraction and discover that as the light travels through the gelatin, its speed and wavelength also change. FORMS OF ENERGY - LESSON PLAN 2. Light changes direction and speed when it goes from one medium to another. 03 x 108 m/s. How much does it cost to use all of the lamps for 2. Absorption. Displaying all worksheets related to - Speed Of Light. When light travels from air into water, the light bends _____. BUILD UP YOUR CHILDS SELF ESTEEM. The angle of incidence is 34°. interaction of light waves with plane and spherical surfaces—with mirrors and lenses—in terms of light rays. (Circle the correct answer. Plot The story line of the play. 1) (a) A tank containing methanol has walls 2. Gather round the table, we'll give you a treat. For instance there are many worksheet that you can print here, and if you want to preview the Reflection And Refraction Worksheet simply click the link or image and you will take to save page section. The separation of the colours is called dispersion of light and the colours are a spectrum. This activity also meets the following Tennessee Foundations of Technology educational technology content standards: 2. · After the exploration portion of the lesson the students and I will go over what reflection & refraction mean. A room has a 60 watt, a 100 watt, and a 150 watt light bulb. The first occurs on a blank mirroring surface that retains the geometry of the beams of light. From light reflection refraction worksheets to wave reflection refraction videos, quickly find teacher-reviewed educational resources. Suppose light entered the sample from air (n = 1) at an angle of 30°. o Reflection effect caused by refraction • Line-of-Sight propagation (LOS) • Non-LOS propagation Wave Polarization • The plane of polarization of a radio wave is the plane in which the E-field propagates with respect to the Earth. For this refraction worksheet, students will explore the property of light called refraction. Light travels _____ (fastest, slowest) in media with a higher index of refraction value. 96 x 108 m/s. About This Quiz & Worksheet. Has or Have. Worksheet Name_____ Period_____ Date_____ ***Using the following diagrams please answer the corresponding questions*** The following diagram is of a set of human chromosomes. Here you will find all we have for Reflection And Refraction Worksheet. Then early microscope designers like Robert Hooke changed all that. Scroll down to view our complete list of sentence completion worksheets appropriate for all ages and ability levels. Refraction of light Simone Zuccher February 4, 2013 Contents 1 The physical phenomenon 1 2 Laws of refraction 2 3 Visible light wavelength dispersion 3 4 Critical angle and total internal reﬂection 3 5 Conclusion 4 6 Questions 4 1 The physical phenomenon Refraction is a physical phenomenon that occurs every time. This change in the direction of light is known as refraction of light. Diffraction. Record the answer to each question (10 points each) in your science notebook on page 12a (or right after your energy foldable notes) Windmill. When a light wave hits a new medium at an angle (not along the normal), the front part of the wave changes speed while the far side side of the wave does not. OBJECTIVES 1. 40 ? Answer - = light leaves the prism. Answer: Some answers may include intensity of light, absence of light, color of light, or amount of light. A great way to aid better understanding of the different science concepts among kids is by giving them interesting science activities to do and science worksheets to solve. Cross-Curricular Reading Comprehension Worksheets: D-2 of 36 An ecosystem is all the things that interact in a speciﬁ c area, whether they are living or non-living. Thus, from the above equation, note that 2 will increase when the index of refraction of the Crown glass decreases. Reinforcement: These worksheets provide an additional resource for reviewing the con-cepts of the chapter. 40 ? Answer – = light leaves the prism. The point from which the refracted rays appear to come gives the apparent position of the coin. Light, Reflection & Refraction Student Worksheet Properties of Light When light moves through an area, there are very specific rules that determine its path. Record the answer to each question (10 points each) in your science notebook on page 12a (or right after your energy foldable notes) Windmill. Answers: 2" 3" 1" 2". The liquids are bending light as a glass prism does. Other Files : Light Reflection And Refraction Worksheet Answers, Light Refraction Worksheet Answers, Light Refraction. Light travels so quickly that sometimes we can forget it even travels at all. Refraction Upside down Convex lens Upright Plane mirror Lens that curves inward Virtual Light particle Photon A point where light rays are concentrated Real Light rays (both visible and invisible) Electro-magnetic radiation When light travels from a more dense medium to a less dense medium, the light ray refracts away from the normal. These basic concepts will help us in the study of some of the optical phenomena in nature. Displaying 11 - ANSWERS Worksheets Lenses and Refraction. View Lab Report - (PhET Refraction Lab Answer Key. Determine the speed of light in the following materials: a. W 0 AM5aUdMeR mwViitVhz xIunWf3i6nti Rtke x kPMrse u-xA Xlegre 2b Wral. Reflection and Refraction Equipment Acrylic block set, plane-concave-convex universal mirror, cork board, cork board stand, pins, flashlight, protractor, ruler, mirror worksheet, rectangular block worksheet, equilateral prism worksheet, converging lens worksheet. Refraction by rectangular block and prism 4. Calculate the index of refraction for sodium chloride. If the velocity of light in vacuum is 3 × 108m/s , find the velocity of light in the material. The height of the first hill (h) is 20 meters. SPH4U The Wave Nature of Light Unit Plan Day / Topic Curriculum Expectations Agenda Timing Materials Needed Assessment/ Evaluation Reference Do Now Terminology Review Worksheet ‐ Hand out worksheet as students walk in ‐ Take up answers, have students go up and fill in the blanks on the SmartBoard. Illustrate how white light can be separated into colors. Find the angle made by the reflected ray and the surface. – explain your answer?. - The true cost of an appliance (even as simple as a light bulb) must take into account its lifetime operating cost, including energy consumption and replacement costs. Determine the speed of light in diamond. Answer: Light ray emerging from water medium to air medium bends away and then reaches the eye. Sevivon to play with, Latkes to eat. 496 x 1011 meters 1 mile = 1. Download Pdf. Continue solving questions like this until you’ve finished the chart. Often, you’ll see that the perceptions you want to have and want to avoid are totally unrealistic. Reflection of light may be specular or diffuse. In each room, you can talk with a character by clicking on him or her. Physics Worksheet Reflection and Refraction 20. Worksheet 2. This quiz and worksheet combination will test your understanding of refraction. 51 for red light. Oh Hanukkah, oh Hanukkah, come light the Menorah, Let's have a party, we'll all dance the hora. Some of the worksheets displayed are Light reflection refraction, Shedding light on refraction work name, Measuring refraction silicon work answer key, Refraction tutorial work, Physics work lesson 24 reflection and refraction, Lesson 1 refraction and lenses the physics classroom, Total internal reflection, Graph the image of. Physics Worksheet Reflection and Refraction Section: Name: Mr. Ignore any reflected light. Before the microscope was invented, people thought there was nothing smaller than the smallest things that could be viewed with the human eye. On this page you can read or download answer key to science section 3 refraction and lenses worksheet in PDF format. Post Harvest Care of Cut Flowers 1. Repeat this question for an angle of refraction of 25° Snell’s Law Worksheet 1 Part A 1. Answer: Light ray emerging from water medium to air medium bends away and then reaches the eye. Diffraction and Interference Worksheet College Physics 104 1. what does the “(s)” after the formula of lithium oxide signify?. 0° from the normal in air into a pane of glass (n = 1. You send the light through a double slit with slit separation of 15µm to a screen located 1. Apply Snell’s law to a laser beam incident on the interface between media. In this process it bends away from the normal. Worksheets (also known as Workbooks) are optional tools that help Scouts organize notes, listen actively, and document their work. The ratio of the sin of the angle of incidence to the sin of the angle of refraction is a constant. L p cM Jadpe5 wTiVtChd wInSfGiCnxikttek DG Le 7obm ne wtVroy 4. Magnets exert a force of attraction on anything made of iron. Example: A ray of light travels from air to corn oil. ), and absence. Preparation Review the laws of reflection and refraction and Snell's law. If the ray of light in air makes an angle of 30. Applications of Total Internal. Warning: your pencil may not be quite the same afterward. Worksheets are synchronized to readings from The Physics Classroom Tutorial and to sublevels of the Minds On Physics Internet Modules. You send the light through a double slit with slit separation of 15µm to a screen located 1. (Copy the solution below) Problem 2: The speed of light in vinegar is 2. Reflection of Light. The speed of light (v) in a material is determined using the speed of light in a vacuum (c) and the index of. A plot must include a complication(s), rising action, climax, and a resolution. Refraction is nothing but the phenomenon by which when light travels from a denser media to the lighter media, it deflects away from the normal to the plane of the media. Name: Date: cfw_1233 1'35". Make the first angle of incidence (angle 1) as small as possible, so the second angle of incidence (angle 2) will be as large as possible. What kind of light does your remote control for your television use? infrared light 4. What is the difference in the angles of refraction?. Refraction is the process in which light is bent, when it travels from one medium to another. It's hard to imagine how particles would do this - though Newton tried. Absorption. Properties of Light • Waves, particles and EM spectrum • Interaction with matter • Absorption • Reﬂection, refraction and scattering • Polarization and diffraction • Reading foci: pp 175-185, 191-199 not responsible for boxes 7. When light strikes a surface that is rough, the light will. Students will conduct a quick experiment to understand how light is refracted. Light travels slower in materials that are more dense, because there are more particles. If you want to download the image of Light Refraction And Lenses Physics Classroom Worksheet Answers Or Selina Icse Solutions For Class 10 Physics Refraction Through Lens in high quality, simply right click the image and choose "Save As". Covers transparent, translucent, and opaque substances, as well as rainbow formation, refraction, and reflection. 98892 × 1030 kilograms Luminosity of our Sun = 3. A light beam is of three types. Often, you’ll see that the perceptions you want to have and want to avoid are totally unrealistic. Before the microscope was invented, people thought there was nothing smaller than the smallest things that could be viewed with the human eye. 3) The flashcards we have provided will help your student recognize and learn the meaning of each of these common road signs and signals so he/she is able to. This is your solution of Short Answer Questions : Light - Reflection & Refraction search giving you solved answers for the same. It helps us understand who we are as humans and what we need in order to survive. But light from distant parts of the universe is just now arriving here at Earth, billions of years after the Big Bang. Some sentences contain a single blank, while others contain two. Topics covered include re ection and trans-mission at boundaries, dispersion, polarization e ects, di raction, coherence, ray optics and imaging, the propagation of light in matter, and the quantum nature of. Light can travel with little loss in a curved optical fiber made of glass or plastic ("light pipe") because the light is totally reflected whenever it strikes the core-cladding Interface and since the absorption of light by the core itself is small. FREE Refraction Activities and Classroom Resources! | Teacher Planet Refraction Lessons, Worksheets and Activities By Signing up, you agree to our privacy policy. ) (b) Complete the path of the light beam. Justify your answer in each case. Lesson Plan Chapter 14 Refraction CHAPTER 14 CHAPTER 14 Refraction Chapter Opener __ Tapping Prior Knowledge, TE Review previously learned concepts and check for preconceptions about the chapter content. Easier to grade, more in-depth and best of all 100% FREE! Kindergarten, 1st Grade, 2nd Grade, 3rd Grade, 4th Grade, 5th Grade and more!. Home Lab 5 Refraction of Light - University of Virginia. How much does it cost to use all of the lamps for 2. NOTE: Write these answers directly on the DQB beneath “Light. The Lens Equation An image formed by a convex lens is described by the lens equation 1 u + 1 v = 1 f where uis the distance of the object from the lens; vis the distance of the image from the lens and fis the focal length, i. Home Electrical Safety Challenge – Answer Key Is there more you should do to ensure the electrical safety of your home and family? Check your answers against the ESFI-recommended answers below. Worksheets are synchronized to readings from The Physics Classroom Tutorial and to sublevels of the Minds On Physics Internet Modules. Light travels in a vacuum at a constant speed, and this speed is considered a universal constant. Oh Hanukkah, oh Hanukkah, come light the Menorah, Let's have a party, we'll all dance the hora. - The true cost of an appliance (even as simple as a light bulb) must take into account its lifetime operating cost, including energy consumption and replacement costs. (EP B19 and B25) K4. Q11: Under what circumstances there won't be any refraction of light when it enters from one medium to another? Answer: There are two possible cases: (i) When light incidents at 90 degress (normal) it will not bend. Reflection and Refraction Worksheet. The angle of refraction depends on the angle of incidence of the light, and the indexes of refraction of the two materials. , Light And Refraction Worksheet Answers. As shown below, an electromagnetic wave is a transverse wave consisting of mutually perpendicular oscillating electric and magnetic fields. (a) Polished wooden table (b) Chalk powder (c) Cardboard surface (d) Marble floor with water spread over it (e) Mirror (f) Piece of paper Q4: State the laws of reflection. 00 degrees to the normal, (a) what is the angle of refraction in corn oil? (b). We define the index of refraction, n, of a material to be the ratio of the speed of light in vacuum to the speed of light in the material: n = c/v When light travels from one medium to another, its velocity and wavelength change, but its frequency remains constant. (1720k) Andrea Zurawski,. The answers below assume that students use 1" paper clips. When this happens, no light at all escapes the medium with the larg er index of refraction and 100% of the light is reflected. Light in air i s incident upon a piece of flint glass at an angle of 3. Students will complete the Refraction Activity Worksheet independently. Use the diagram below to answer the following problems. worksheet: road signs & signals (ch. CBSE Class 10 Science - Reflection & Refraction Of Light. Based on the information you read in the article, what does the acronym ROY G. The index of refraction of crown glass is 1. This workbook contains worksheets on Light Reflection & Refraction for Grade 10 CBSE/ ICSE students. Answer: Light ray emerging from water medium to air medium bends away and then reaches the eye. Light (Reflection and Refraction) Notes For Class 10 Formulas Download PDF. FREE Refraction Activities and Classroom Resources! | Teacher Planet Refraction Lessons, Worksheets and Activities By Signing up, you agree to our privacy policy. The light may be reflected back from the surface, transmitted through the material (in which case it will deviate from its initial direction, a process known as refraction) or absorbed by the material if it is not transparent at the. Define: Optical center of a lens. A ray of light in air strikes a block of quartz at an angle of incidence of 30˚. The ratio of the sin of the angle of incidence to the sin of the angle of refraction is a constant. These science worksheets teach kids about the world around them, from atoms to planets and everything in between. Find the angle the light makes with the normal in the methanol. Problem 3: The speed of light in olive oil is 2. Looking for some demonstrative pronoun worksheets? Read on. (a) 49 53. NOTE: Write these answers directly on the DQB beneath “Light. 0) into water (n = 1. Let XY be the plane which separates the two media. Career Path Worksheet By Wendy Enelow, MRW, JCTC, CPRW Fill in the following information to create a plan that will take you step-by-step toward your. BIV stand for? In your answer, make sure you list one word for every letter of the acronym. 3 Interference As we pointed out in our discussion of traveling waves, the superposition principle applied to the wave model produces unique interference phenomena. Refraction of Light Lab Answers Introduction This laboratory was designed to investigate the behaviour of light as it travels through a less dense into a denser medium. interaction of light waves with plane and spherical surfaces—with mirrors and lenses—in terms of light rays. Q11: Under what circumstances there won’t be any refraction of light when it enters from one medium to another? Answer: There are two possible cases: (i) When light incidents at 90 degress (normal) it will not bend. It is always virtual and erect. Animation: Rotating a Mirror and the Reflected Ray. Reflection and refraction When light hits a surface, one or more of three things may happen. 00 into the Crown glass, Snell's law gives the angle of refraction as 1 2 Crown glass sin sin25. Answers To Refraction Woorksheet For Physics. Refraction of Light Lab Answers Introduction This laboratory was designed to investigate the behaviour of light as it travels through a less dense into a denser medium. 0° from the normal in air into a pane of glass (n = 1. What is the speed of light in glycerin? 4. Example: What’s the speed of light in diamond? 21. The type of microscope used in most science classes is the ____light_____ microscope. The law of reflection says that a. Refraction of light Simone Zuccher February 4, 2013 Contents 1 The physical phenomenon 1 2 Laws of refraction 2 3 Visible light wavelength dispersion 3 4 Critical angle and total internal reﬂection 3 5 Conclusion 4 6 Questions 4 1 The physical phenomenon Refraction is a physical phenomenon that occurs every time. Chapter 19- Wave Properties of Light 416 19. Created Date: 4/5/2013 5:24:27 AM. Some of the worksheets displayed are Light reflection refraction, Shedding light on refraction work name, Refraction and lenses, Measuring refraction silicon work answer key, Physics work lesson 24 reflection and refraction, Light energy work, Refraction tutorial work, Refraction work triangle diagram on other in. Movement of light to a material with a higher index of refraction means the light will slow down. 00 degrees to the normal, (a) what is the angle of refraction in corn oil?. Ray of Light : A line drawn in the direction of propagation of light is called a ray of light. In moving through space, these light rays can interact with matter in two ways, through re ection and refraction. Why ? Â A tank of water is 4 m deep. 5 Students check their answers in their group. Welcome to Little Worksheets Worksheets That Are Dedicated To The Little Ones : Ages 3 to 11. Showing top 8 worksheets in the category - Refraction. This diagram is known as a KARYOTYPE. Take this quiz to show your knowledge of refraction. The index of refraction of crown glass is 1. Snell's Law Problems (Answer with full solutions on the back of this page) 1. Check out this easy way to teach kids about light with this simple light refraction experiment! And, if you like this one, try some of our other science activities, including how to make an egg float and our easy heat conduction experiment! Simple Light Refraction Experiment. Use your calculator to compute each of the fol-lowing. How much does it cost to use all of the lamps for 2. 496 x 108 kilometers = 1. Continue solving questions like this until you’ve finished the chart. ANSWER KEY The Magic of Rainbows By Lydia Lukidis 1. The ratio of the sin of the angle of incidence to the sin of the angle of refraction is a constant. YOUR 10 POINT GUIDE ON HOW TO BE MORE EFFECTIVE. Plate Tectonics Worksheet Pdf Answers Plate Tectonics Pdf Worksheet Function Table Worksheets Substance Abuse Recovery Worksheets Kpi Spreadsheet Template Light Me Up. What is the total voltage in each circuit? b. An assessment worksheet is provided for each activity; children demonstrate that they understand the concepts in each activity by completing the corresponding worksheet. Reflection of Light. About This Quiz & Worksheet. Centriole 2. BIV stand for? In your answer, make sure you list one word for every letter of the acronym. Bosworth General Physics Light and Refraction Worksheet 1a. OBJECTIVES 1. Ray of Light : A line drawn in the direction of propagation of light is called a ray of light. Reflection of Light. They function in cell division. Students will have fun learning about such topics as fossil fuels, renewable resources, electricity, magnetism, and heat in these 10 interactive science activities. Once you've found the answer, look for the box that starts with that answer and then solve the math question in that box. Light is an essential part of your day. Here you will find all we have for Reflection And Refraction Worksheet. This phenomenon is caused by a change in the speed of the light waves. REFRACTION – Part 2 (Critical Angle and Total Internal Reflection) Lesson 6 4. They will cover the four demonstrative pronouns: that, this, these, and those. There are total 3 worksheets with 60+ questions. Name: Date: cfw_1233 1'35". When light strikes a smooth barrier between two transparent materials, the light is partly reflected, and partly refracted (transmitted). Mirror worksheet 1 - ray diagrams. with the highlighted box. CBSE Class 10 Science - Reflection & Refraction Of Light. Light reflection and refraction Worksheet-16 Â A coin in a glass beaker appears to rise as the beaker is slowly filled with water. Displaying 11 - ANSWERS Worksheets Lenses and Refraction. Use the diagram below to answer the following problems. interaction of light waves with plane and spherical surfaces—with mirrors and lenses—in terms of light rays. Refraction is the process in which light is bent, when it travels from one medium to another. Properties of Light • Waves, particles and EM spectrum • Interaction with matter • Absorption • Reﬂection, refraction and scattering • Polarization and diffraction • Reading foci: pp 175-185, 191-199 not responsible for boxes 7. Then students will complete 2 short answer questions. These are the Light Reflection and Refraction class 10 Notes prepared by team of expert teachers. Refraction is the bending of light, changing its path. – explain your answer?. Worksheets are very critical for every student to practice his/ her concepts. Diffraction. Sevivon to play with, Latkes to eat. 3) The flashcards we have provided will help your student recognize and learn the meaning of each of these common road signs and signals so he/she is able to. Light & Optics Demonstration List. Light, Reflection & Refraction Student Worksheet Properties of Light When light moves through an area, there are very specific rules that determine its path. See roller diagram below. Spring 2010- Home Lab -Week 4 - Reflection of Light Rays Name_____ Date_____ University of Virginia Physics Department Phys 6251, Spring 2009 2 2. Refraction and Lenses The following downloadable PDF files represent a collection of classroom-ready worksheets pertaining to the topic of Refraction and Lenses. Reflection of Light. Find the angle made by the incident and reflected rays. All Chapter 10 - Light Reflection and Refraction Exercise Questions with Solutions to help you to revise complete Syllabus and Score More marks. Describe how the speed and wavelength of light changes in different media. From light reflection refraction worksheets to wave reflection refraction videos, quickly find teacher-reviewed educational resources. Water transport in plants board game. The speed of light, although quite fast, is not infinite. Can you answer all these questions about light worksheet and reflection? Let's play this quiz and prove yourself now! Correct Statements Of Light Worksheet And. " It came at a time where we just finished learning about states of matter. Numerical Problems on refraction of light Numerical Problem 1 The refractive index of a material is 1. P O hAyl7l8 Krxi6gkh7tSsY 3rte KsWeSrMvbeodQ. Preparation Review the laws of reflection and refraction and Snell's law. 50, and the angle of refraction is 15 degrees for a ray of light traveling from air, what is the angle of incidence? 9. Lu Classify the bending of light as exhibited by the ray diagrams. o Worksheet by Kuta Software LLC Kuta Software - Infinite Geometry Name_____ Reflections Date_____ Period____ Graph the image of the figure using the transformation given. 00 degrees to the normal, (a) what is the angle of refraction in corn oil?. A combination of lenses is needed to avoid this. With proper post harvest care, the vase life of flowers can be maximized. This is called refraction. It cannot be seen but the way it acts can be seen. Light rays change direction as they leave each liquid, and the degree to which the light is “bent” in each case depends on its angle inside the liquid at the side of the beaker. \$ The medium's position is about the same as its original position. o Reflection effect caused by refraction • Line-of-Sight propagation (LOS) • Non-LOS propagation Wave Polarization • The plane of polarization of a radio wave is the plane in which the E-field propagates with respect to the Earth. It is laterally. Spring 2009 ‐ Home Lab – Week 5 ‐ Refraction of Light Name_____ Date_____ University of Virginia Physics Department Phys 6251, Spring 2009 3 6. Determine the speed of light in diamond. Light reflecting off objects helps us see them. CHAPTER 29 REFLECTION AND REFRACTION 581 Your experience is that light travels in straight lines. 1 REFLECTION OF LIGHT. Energy Transformation Worksheet. resistance of the light bulb? (Hint: A D-cell battery has 1. Shadows & Light = open link in new window. Reflection and refraction When light hits a surface, one or more of three things may happen. These are the Light Reflection and Refraction class 10 Notes prepared by team of expert teachers. By what percent does the speed of the red light exceed that of the blue light. One ray of light in air strikes a diamond and another strikes a piece of fused quartz. Download free worksheet Assign digitally. 8 Refraction of Light (pages 587-588) 34. His family brags that they are a “purebred” line. Expect drawings to be similar to the #5 answer on page 1 of this worksheet. ANS :Optical center of a lens is the center of lens on the principal axis. See roller diagram below. __ Discovery Lab, Refraction and Lenses, ANC Students observe how light behaves as it. Answer the questions on the worksheet by checking “True” or “Not True. These science worksheets teach kids about the world around them, from atoms to planets and everything in between.