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College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A diffraction grating having 4000 lines/cm is illuminated with 500-nm light. What is the angular separation between the m = 2 and the m = 3 diffraction maximums?
Select one:
a. 12.0 degrees
b. 13.3 degrees
c. 36.9 degrees
d. 23.6 degrees
e. 25.3 degrees
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- Problem 4 A worker is required to identify and inspect an object 1 m away. It is illuminated by a 75-W light source 1 m to his left. The background against which the object is viewed is 1.5 m away. If the reflectances of the object and background are .6 and .5 respectively, what is the contrast? background .5 m object 1 m light 1 m eyearrow_forwardA material having an index of refraction of 1.35 is used as an antireflective coating on a piece of glass (n = 1.50). What should be the minimum thickness of this film in order to minimize reflection of 590 nm light? nm If instead a material with an index of refraction of 2.10 is used for the coating, what are the two smallest thicknesses to minimize reflection (in order). nm and nmarrow_forward33. You have a laser (a monochromatic light source) and want to estimate the wavelength. You decide to use a reflective diffraction grating to do this. The light is incident on the grating at 20 degrees with respect to normal. Using a grating with a groove distance of 5 um, the first-order diffraction, is found at an angle of -12.5 degrees. Determine the wavelength of the source. a) 500 nm b) 628 nm c) 808 nm d) 946 nm e) None of the above 34. In Raman spectrometry, Stokes lines have a) lower energy than that of anti-Stokes scattering. b) equal energy to that of anti-Stokes scattering. ) higher energy than that of anti-Stokes scattering d) none of the above 35. Upon ionization of phenol in aqueous solution, maximal UV absorbance changes to longer wavelength. a) True b) False 36. It takes longer time to observe fluorescence than phosphorescence. a) True b) False 37. The vibrational motion of C-H stretching in ethylene as in the figure can be detected by a) IR. b) Raman. c) IR and Raman.…arrow_forward
- Light from an argon laser strikes a diffraction grating that has 4,300 grooves per centimeter. The central and first-order principal maxima are separated by 0.444 m on a wall 1.67 m from the grating. Determine the wavelength of the laser light. 597.5 nm 510.7 nm 440.3 nm 363.9 nmarrow_forwardA grating diffracts a green light at 520 nm with 3000 lines/cm. Through what angle is the light diffracted in the first order?arrow_forward532 nm light is used on a 10.8 cm air wedge to measure the thickness of a grain of sand. The distance between the centers of dark band 2 and dark band 8 is 0.22 cm. What is the thickness of the grain of sand in micrometers?arrow_forward
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