mirror is called the point of incidence. The ray of light which is sent back by the mirror is called the reflected ray. The ‘normal’ is a line drawn at right angles to the mirror surface at the point of incidence. The angle between incident ray and normal is called the angle of incidence. The angle between reflected ray and normal is called the angle of reflection.Laws of reflection of light: The incident ray‚ the reflected ray‚ and the normal {at the point of incidence}‚ all lie in the same plane
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drawn to the reflecting surface at the point of incidence is called the Normal. 4. Angle of Incidence – The angle which the incident ray makes with the normal at the point of incidence. It is denoted by the letter ‘i’. 5. Angle of Reflection – The angle which the reflected ray makes with the Normal at the point of incidence. It is denoted by the letter ‘r’. Laws of reflection – i. The angle of incidence ‘i’ is equal to the angle of reflection ‘r’. ii. The incident ray‚ the
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Question How does the intensity of light change as the angle of incidence to the light source increases? Prediction of Results Predict what you think will happen and what type of equation and graph might best fit the data representing the intensity of a light as the angle of incidence increases. Objective After completing this lesson‚ a student should be able to analyze light intensity striking a surface at varying angles of incidence. Materials CBL‚ TI-83 Plus calculator‚ light sensor‚
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4. Theory 5. Procedure 6. Observations 7. Diagrams 8. Calculations + Graphs 9. Precautions 10. Bibliography OBJECTIVES: To study the variation of the angle of deviation with the angle of incidence using Hollow Glass Prism and to determine the angle of minimum deviation. To find out the refractive index of various liquids using a Hollow Prism. INTRODUCTION:
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Below there are three objects a mirror‚ a glass block and a prism‚ it shows and tells you underneath each of the objects picture a description of what happens when light ray is shone on it. The source of light is a light bulb from a ray box. If a beam of light of one colour is shone through a prism‚ the direction of the beam is changed by the prism. This is because the two faces of the prism through which the light passes are not parallel. If white light is used the prism splits up the light into
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refractive index of a glass prism. In this experiment‚ the independent variable is the angle of incidence‚ and the dependent variable is the angle of refraction. Theory: Snell’s law relates the angle of incidence and refraction to the ratio of the velocity of the wave in the different media. The formula for Snell’s law is the following: Sin isinr = v1v2 = n Where i is the angle of incidence‚ r is the angle of refraction and v1 and v2 are the velocities of the wave in different media and n is
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Angle of Incidence vs. Angle of Reflection October 23‚ 2011 by alison12 · No Comments · Uncategorized Angle of Incidence vs. Angle of Reflection Background Information: Reflection is the change of direction of light. The angle a light ray makes is the same after reflection occurs as it is before reflection occurs. Reflection is the image seen when looking into a mirror‚ still water‚ or a polished surface. The reflected image seen will be the same as the object which is being reflected. Aim:
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law of reflection states that the angle of reflection and angle of incidence are equal‚ with each angle being measured from the normal to the boundary: Refraction is defined as the bending of light that takes place at a boundary between two materials having different indices of refraction due to a change in the speed of light as it passes from one medium to another. The Law of Reflection (Snell’s Law) states that the ratio of the sines of the angles of incidence and refraction is equivalent to the
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incident ray with an I • the refracted ray with an R • the angle of incidence with a ! i • the angle of refraction with a ! r 4. How many media are there in this diagram? _____ Name them. 5. What is meant by the term "medium" in this context? 6. 7. Place a noticeable dot at the location where refraction of light takes place. For the three situations below‚ draw a normal line and measure and record the angles of incidence and the angles of refraction. !i = !r = 8. !i = !r = !i = !r
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Learning goals Familiarize with simulations of physical processes. Log raw data and plot graphs. Partially familiarize with the scientific method (phenomenon‚ prediction‚ experiment‚ and conclusion). Derive the dependence of the angle of refraction on the angle of incidence and the index of refraction. Simulation used “Refraction of light” (“bending-light_el.jar”): http://phet.colorado.edu/en/simulation/bending-light Additionally: Spreadsheet application (like Microsoft Excel) Theory / Definitions
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