College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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- The walls of a soap bubble have about the same index of refraction as that of plain water, n = 1.33. There is air both inside and outside the bubble. What wavelength (in air) of visible light is most strongly reflected from a point on a soap bubble where its wall is 340. nm thick? Note: Your answer is assumed to be reduced to the highest power possible.arrow_forwardA 360-nm thick oil film floats on the surface of a pool of water. The indices of refraction of the oil and the water are 1.50 and 1.33, respectively. When the surface of the oil is illuminated from above at normal incidence with white light, what is the wavelength of light between 400 nm to 800 nm wavelength that is most weakly reflected? Select one: a. 520 nm b. 540 nm c. 600 nm d. 580 nm e. 560 nmarrow_forward4. a. Determine the size of the Airy disk (in m) found at the center of a 4.00-cm diameter lens, with a focal length of 15.0 cm. Assume the incident light wavelength is the middle of the visible spectrum = 550. nm. b. In observational astronomy, we assume that stars, being so far away, are point sources of light, and that the image of a star in a telescope eyepiece is therefore also a point. Given that the average human near-field resolution is 0.10 mm, does your result in part a justify this assumption? Explain your answer, using the value from part a. c. Assume that the objective lens diffraction limit is the only one that matters on a telescope (actually a good assumption, not justified here). What is the angular size (in radians) of the smallest object that can be truly observed as a disk on the 4.00-cm telescope in part a? Can Jupiter (maximum angular size = 51 arc-seconds) be seen as a disk through this telescope? Note that real telescopes have glass or mirror imperfections which…arrow_forward
- Problem 1: You want to test a special watertight monochromatic light source in an un- derwater environment. If the light source shines its beam of electromagnetic radiation into your eyes when you and the light source are above the water, with both your eyes and the light source immersed in air, the beam appears to your eyes to have a deep violet color. The index of refraction of water is about 1.33 What color, if any, would your eyes perceive the beam to have when you and the light source are submerged in water – and why? (A) No color. The beam would become invisible under water because its wavelength in water is shorter than in air, corresponding to a wavelength of ultra-violet light. The beam's wavelength in the water determines its visibility to the eye under water, and ultra-violet light is not visible to the human eye. (B) Same color as in air, above the water, i.e., deep violet. Under water, the beam would have the same wavelength as in air. The beam's wavelength in the water…arrow_forwardanswer for the second twoarrow_forwardThe lens of a camera has a thin film coating designed to enhance the ability of the lens to absorb visible light near the middle of the spectrum, specifically light of wavelength 560 nm. If nair = 1.00, nfilmcoating %3D 1.40, and njens 1.55, what is the required minimum thickness of the film coating? Assume that the light is normally incident in the air medium. a. 200 nm O b.250 nm O c. 100 nm O d. 150 nm e. 300 nmarrow_forward
- 2. White light is incident from air onto an equiangular triangle prism at a 40.0° angle with respect to the normal. The prism is composed of crystal that has an index of refraction of 1.40 for red light and 1.45 for violet light. Take nair = 1.00 for all wavelengths. a. What is the angular separation of the red and violet ends of the spectrum within the prism?arrow_forwardAssume that a material is composed of 3 layers in descending order: air (nair = 1.00), water (nwater = 1.33), and glass (nglass= 1.52). Then, assume that a monochromatic light ray in the air passes through the surface of water with an angle of incidence 0₁ = 40 degrees. A. Find the angle of refraction in glass after it passes completely through the water layer. B. Find how fast is the light ray moving in the glass?arrow_forwardA beam of monochromatic light of wavelength 400 nm is projected through a circular opening 2.3 mm wide. Find the width of the beam (in mm) at a distance 7 meters away. O a. 3.0 о ь. 1.1 О с. 1.5 O d. 4.6arrow_forward
- w9-10 A diamond in air is illuminated with white light. On one particular facet, the angle of incidence is 25.70°. Inside the diamond, red light (λ = 660.0 nm in vacuum) is refracted at 10.88° with respect to the normal; blue light (λ = 470.0 nm in vacuum) is refracted at 10.13°. How would a diamond look if there were no dispersion? a. The diamond would look white. b. The diamond would look red. c. The diamond would look blue. d. The diamond would be clear.arrow_forwardA laser beam is incident at an angle of 30.00to the vertical onto a solution of blood plasma in water. If the beam is refracted to 19.240 to the vertical: What is the index of refraction of the blood plasma solution? Suppose the light is red, with wavelength 632.8 nm in a vacuum. Find: Its wavelength. Its frequency. Its speed in the solution. The critical angle for the blood plasma solution when surrounded by airarrow_forwardA sodium light, having wavelength 589.3 nm, is used to view a soap film to make it look black when directed perpendicular to the film. What is the minimum thickness of the soap film if the index of refraction of soap solution is 1.38?arrow_forward
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