w w e tr .X w ap eP m Location Entry Codes The content assessed by the examination papers and the type of questions are unchanged. This change means that for this component there are now two variant Question Papers‚ Mark Schemes and Principal Examiner’s Reports where previously there was only one. For any individual country‚ it is intended that only one variant is used. This document contains both variants which will give all Centres access to even more past examination material
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Light‚ Refraction and Lenses Name: Light Refraction Read from Lesson 1 of the Refraction and Lenses chapter at The Physics Classroom: http://www.physicsclassroom.com/Class/refrn/u14l1a.html http://www.physicsclassroom.com/Class/refrn/u14l1b.html http://www.physicsclassroom.com/Class/refrn/u14l1c.html http://www.physicsclassroom.com/Class/refrn/u14l1f.html MOP Connection: 1. 2. Refraction and Lenses: sublevels 1 and 2 Write a one-word synonym for refraction. Refraction occurs when light crosses
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Fiber Optics Assignment Many modern medical materials and equipment work on a principle which is beyond the capacity of human transducers. Comment and discuss the working principles of an endoscope‚ uteroscope or a rectoscope showing the illuminating path‚ the image path‚ transmission path and the liquid transfer or operating instrument ducts‚ showing the position of suitable valves. This will therefore explain how light travels through an optical fibre and show how such
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a. attenuation less b. bend c. refract d. deflect e. absorb 3. What does LASER stand for? a. Light Amplification by Stimulated Emission of Radiation b. Light Amplification of Spreading Emission Reflection c. Light Amplitude of Stimulated Emission of Refraction d. Light Amplitude of Stimulated Effect of Radiation 4. What causes most fiber optic attenuation and absorption? a. exceeding the bending radius b. impurities in the
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fibre‚ simply to carry the signals. The signals sent and received are coded voice messages and computer data. Optical fibres use light to carry information between too different sources. This system works on two key optical properties: Total internal reflection and refraction. Optical fibres are
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8th physics light reflection refraction eyes defect and dispersion The ray of light which falls on the mirror surface is called incident ray. The point at which the incident ray strikes the 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
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transmitted in two directions at the same time. 7. PHOTODIODE: 8. AMPLITUDE MODULATION: 9. ANALOG TRANSMISSION: 10. DIGITAL TRANSMISSION: 11. SAMPLE RATE: 12. ELECTROMAGNETIC WAVE: 13. REFRACTION: 14. MEDIUM: 15. TOTAL INTERNAL REFLECTION: 16. FRESNEL REFLECTION: 17. TENSILE REFLECTION: 18. DESPERSION: 19. BANDWIDTH: 20. POLARITY: 21. ABSORPTION: 22. SCATTERING: 23. EQUILIBRIUM MODE DISTRIBUTION: 24. PERSONAL PROTECTIVE EQUIPMENT: 25. GOOD WORK HABITS:
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Examining the Refraction of Light in Prisms Questions 1. What is the relationship between the angle of incidence and the angle of refraction? The angle of incidence (formed by the ray of light travelling though air into a slab of rectangular perspex) is not directly proportional to the angle of refraction (angle formed between the ray travelling though perspex and the normal). The graph of the plotted angles of incidence against the angles of refraction is not a straight line and therefore demonstrates
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Aim To determine the critical angle of glass using a glass block Principle and Hypothesis The Snell’s Law of Refraction says that – At the boundary between any two given materials the ratio of the sine of the angle of incidence and the angle of refraction is constant for any particular wavelength. The refractive index is determined by the formula – R = Sin i Sin r Where i = angle of incidence of the ray of light r = angle of refraction of the ray of light The
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Phenomena A. Total Internal Reflection 1. When light tries to enter a less optically dense material‚ the light might refract 90o or more. a) This will bend the light between the two media or back into the original material. 2. The refraction of light of 90o (between the two media) is caused by a special angle of incidence –the critical angle 3. The bending of light back into the original medium (refraction > 90o) is known as total internal refraction B. Conditions for Total Internal Reflection 1.
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