To find Refractive Indices of Water And Turpentine Oil using a plane mirror‚ a equiconvex lens (made from a glass of known refractive index) and an adjustable object needle APPARATUS: A convex lens‚ an optical needle‚ a plane mirror‚ a clamp stand‚ a spherometer‚ a plumb line‚ metre scale‚ water and turpentine oil Theroy : Let’s add small amount of water on a flat‚ plane surface and place a convex lens over it. This forms a plano-concave lens of water between the lower surface of convex lens and
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Indian Railways (reporting mark IR) It is an Indian state-owned enterprise‚ owned and operated by the Government of India through the Ministry of Railways. It is one of the world’s largest railway networks comprising 115‚000 km (71‚000 mi) of track over a route of 65‚000 km (40‚000 mi) and 7‚500 stations. As of December 2012‚ it transported over 25 million passengers daily (over 9 billion on an annual basis). In 2011‚ IR carried over 8‚900 million passengers annually or more than 24 million passengers
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T. 34. Refraction is a bending that occurs when a wave moves from one medium to another at an angle and changes speed. _________________________ F. 40. A wave bending as it passes a point of land is an example of refraction. ___diffraction______________________ 43. The __amplitude__________________ of a mechanical wave is a direct measure of its energy. Short Answer Use the diagram to answer each question. 61. What does the person transfer to the rope by pulling it up and down at point
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Final Exam Review Questions Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 1. In the diagram‚ the amplitude of the wave is shown by: a. c c. b b. d d. a ____ 2. In the diagram‚ the crest of the wave is shown by: a. c c. b b. d d. a ____ 3. In the diagram‚ the trough of the wave is shown by: a. c c. b b. d d. a ____ 4. In the diagram‚ the wavelength is shown by: a. c c. b b. d d.
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Experiment to Verify Snell’s Law of Refraction and to Estimate the Speed of Light inside a Transparent Plastic Block 1. Preparation: a) Read about refraction of waves and Snell’s Law. b) Find the relation between the refractive index of a medium and the speed of light in that medium. c) Read about total internal reflection; especially the definition of the “critical angle of incidence”. 2. Using the special apparatus provided‚ measure the angles of refraction corresponding to a wide range of angles
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While experimenting with the speed of light‚ I noticed that the light being refracted was slower when it shined through a denser medium. For example when the higher medium was water and we were comparing it to air‚ the speed of the light being refracted was 0.75 c. If we were to switch the medium to glass‚ which is more dense than water‚ the speed of the light decreased to 0.67 c. For two of the mediums they were both placed at the same angle when we started shining the light and as the outcome
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Water Affects Its Refractive Index? 1. Introduction 1.1 Background Why do object when placed in a bucket of water bend? This is not magic but it is a property of light known as refraction. The bending of light when it travels from one medium to another is known as refraction. Different mediums have different densities and density is defined as the amount of mass per unit volume. The higher the density‚ the higher is the number of particles in a given volume. Therefore as
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RESUME Units of area = cm2‚ ft2 Units of volume = cm3‚ ft3 Type of wave: heat‚ sound‚ magnetic‚ light. -All waves carry energy from one location to another Sound waves (acoustic waves): Travels through a medium Are mechanical Are longitudinal Generally travels in a straight line Are best described as a series of compressions and rarefactions. Diagnostic ultrasound: uses mechanical
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LIGHT- REFLECTION AND REFRACTION 01. What are the various uses of concave mirrors? 02. What are the various sign conventions for reflection by spherical mirrors? 03. A convex mirror used for rear view on an automobile has a radius of curvature of 3m. If a bus is located at 5m from this mirror‚ find the position‚ nature and size of the image. 04. What are the various factors of refraction of light? 05. (a) Define Power of a Lens. Write its SI unit. (b) Find the focal length of a lens
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THE EYE. The normal sighted human eye perceives an object which is ‘described’ by light rays and how they are bent by it . Usually‚ the image of the object is picked up on the retina‚ on the area of the Central Forea as an upside down picture which is then ‘righted’ by the brain in order that the object may be seen. Different distanced objects are perceived by the eye and the lens is the part that makes this possible. Objects which are close to the eye are seen by the eyes’s lens becoming thicker
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