How does dispersion of light occur when white light passes through a prism? Explain the phenomenon and its role in the formation of a spectrum.
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How does dispersion of light occur when white light passes through a prism? Explain the phenomenon and its role in the formation of a spectrum.
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- State following statements whether TRUE or FALSE. i. We can see ordinary solid objects because light is refracted from them. ii. At room temperature the thermal radiation are in infrared region of the spectrum. iii. Our eyes are sensitive to ultraviolet light. iv. Upon heating, objects begin to emit visible light. Temperature of a piece of metal is increases; first it glow with deep red color and then it turns to yellow. V.There are two ways in which light is different from any other kind of wave. Explain.( Why? From fireworks to stars, the color of light is useful in finding out what's in matter. The emission of g by hydrogen and other atoms has played a key role in understanding the electronic structure of atoms. Trace materials, such as evidence from a crime scene, lead in paint or mercury in drinking water, can be identified by heating or burning the materials and examining the color(s) of light given off in the form of bright-line spectra. Model 1 - White Light Lightbulb (white light) Prism Color Reds Oranges Yellows Greens Blues Violets Photon Energy (x 10-2¹) (J) 269-318 318-337 337-352 352-382 382-452 452-523 2. What happens to white light when it passes through a prism? Wavelength Range (nm) 625-740 590-625 565-590 520-565 440-520 380-440 Speed (m/s) 3.00 x 108 3.00 x 108 3.00 × 108 3.00 x 108 3.00 x 108 3.00 x 108
- Monica was using different colored pieces of clear plastic for an art project Her little brother came and scattered the plastic all over the photograph of Name Name Class Date Name 20 the the image she was using as a guide. As she was cleaning up, she noticed that the image appeared differently behind certain colors of plastic. Why was this A. Certain colors of light pass through, leaving everything else blank or invisible. B. Only the color matching the plastic can pass through, leaving everything else shades of black. C. Only the color matching the plastic can pass through, leaving everything else blank or invisible. D. All colors except the one that matches the plastic can pass through, leavng. that color black. If an object reflects purple light and absorbs other colors, what color will that object appear to be in daylight to someone with normal color vision? any color except purple, depending on the object’s density purple black or gray white or gray, depending on the object’s reflectivity explain why the correct answer is right and explain why the other answers are inccorectTheoretically, when magenta paper is illuminated with cyan light, the paper will appear...... a. magenta b. blue c. green d. cyan
- 5. A. Please rearrange the light bulks from high temperature to low temperature. a. B. Why is this the right order? C. If you have a green light bulk, its temperature is between which two lights?What optic phenomena is NOT the result of the wave nature of light? a.coma. b.spherical aberration. c.photoeffect. d.chromatic aberration. e.thin-film interference.4. You are in a room lit only by yellow light. A chair in that room looks red to you. (Your eyes see red + green light as yellow; your eyes see red+ blue light as magenta; your eyes see green and blue light as cyan) a. What colors of light is the chair reflecting in the yellow room? What colors of light is the chair absorbing in that room? Explain. b. You then move the chair out into the sunlight. What possible colors could the chair be in the sunlight? Explain.
- Light can leave a surface through two fundamental processes: self-emission and reflection. Explain both of them and provide examplesIn sunlight, you see a blue truck. What colors of light is the truck absorbing, and what colors of light is the truck reflecting? Explain your answers.Explore the behavior of light in various optical materials, such as dielectrics and conductors. How does the refractive index vary with frequency, and what is the consequence of this variation?