We observe that the light bends when it passes from a transparent medium to another. What is the underlying cause of such change of the direction of light?
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We observe that the light bends when it passes from a transparent
medium to another. What is the underlying cause of such change of the direction of light?
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- An underwater light in a swimming pool is on the side of the pool, 1m below the surface of the water. Light that strikes the surface at a large enough angle will be totally internally reflected. What is the furthest distance from the wall that light still emerges from the surface?Calculate the speed of light in air, water, and diamond if the refractive indices are 1.0003, 1.333, and 2.419 respectively.(A) Show a model as to how white light interacts with a t-shirt that appears to an observer as red and white striped in terms of light wave absoprtion and reflection. (B) Make a model of what will happen when white light is shined through a blue and green filter stacked on top of one another. It will appear black because white light is absorbed but show this in a skectch.
- A ray of light strikes a flat glass block at an incidence angle of 8₁ = 39.8°. The glass is 2.00 cm thick and has an index of refraction that equals n = 1.65. 2.00 cm (a) What is the angle of refraction, 82, that describes the light ray after it enters the glass from above? (Enter your answer in degrees to at least 2 decimal places.) (b) with what angle of incidence, 83, does the ray approach the interface at the bottom of the glass? (Enter your answer in degrees to at least 2 decimal places.) (c) with what angle of refraction, 084, does the ray emerge from the bottom of the glass? (Enter your answer in degrees to at least 1 decimal place.)Fiber optic cables, such as those used for high speed communication (Internet & phone services), transmit signals as light pulses through transparent cables. When viewed from one of the ends, you can see these light pulses, but when viewed from the side you can't. Why does this happen?What is the critical angle of incidence of a transparent medium in which light travels with 2.5 x 10^8 m/s ?
- Light bends on entering glass from air because its ……...is less in the glass.Fiber optic cables, such as those used for high-speed communication (Internet & phone services), transmit signals as light pulses through transparent cables. When viewed from one of the ends, you can see these light pulses, but when viewed from the side you can't. Using your knowledge about reflection and refraction, explain how this might work. Is there some physical limitation where this might not work?