Part A A laser beam illuminates a single, narrow slit, and the diffraction pattern is observed on a screen behind the slit. The first secondary maximum is 29 mm from the center of the diffraction pattern, How far is the first minimum from the center of the diffraction pattern? Express your answer with the appropriate units. Yp = Value Units Submit Request Answer Provide Feedback
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- Light with a wavelength of 574 nm passes through two slits and forms an interference pattern on a screen 9.00 m away. Part A If the linear distance on the screen from the central fringe to the first bright fringe above it is 5.38 cm, what is the separation of the slits? Express your answer to three significant figures. Π| ΑΣΦ d= ? μmPart A In a double-slit experiment, the fringe spacing on a screen 100 cm behind the slits is 4 mm. What will the fringe spacing be if the screen distance is doubled to 200 cm? O 16 mm O 2 mm O 8 mm O 4 mm Submit Request Answer Provide FeedbackUnpolarized light with intensity 300 W/m² passes first through a polarizing filter with its axis vertical, then through a second polarizing filter. It emerges from the second filter with intensity 131 W/m². Part A What is the angle from vertical of the axis of the second polarizing filter? Express your answer with the appropriate units. ► View Available Hint(s) 0 = Value Submit Previous Answers Units ? X Incorrect; Try Again; 14 attempts remaining
- Excited potassium atoms emit deep-violet light at wavelengths 404.4 nm and 404.7 nm. Suppose light from a potassium lamp passes through a diffraction grating that has 960 slits per millimeter. Part A How far behind the grating must a viewing screen be placed so that the two first-order tringes are separated by 10 Express your answer with the appropriate units. L= 0.00238 m Submit Previous Anawace Bequest Answer X Incorrect; Try Again; 13 attempts remaining.I Review I Constants I Periodic Table X rays with a wavelength of 0.12 nm undergo first- order diffraction from a crystal at a 61 ° angle of incidence. Part A What is the angle of second-order diffraction? Express your answer using two significant figures. ? 02 = Submit Request AnswerPart A How far away can a human eye distinguish two car headlights 2.2 m apart? Consider only diffraction effects and assume an eye pupil diameter of 5.5 mm and a wavelength of 560 nm. Express your answer to two significant figures and include the appropriate units. L = 21607.1 for Part A for Part Ado for Part Part B Submit Previous Answers Request Answer m X Incorrect; Try Again; 3 attempts remaining 0 = redo for Part A reset for Part A keyboard shortcuts for Part A help for Part A What is the minimum angular separation an eye could resolve when viewing two stars, considering only diffraction effects? Express your answer using two significant figures. Submit Request Answer for Part B for Part B do for Part redo fol Part B resetor Part B keyboard shortcuts for Part B help for Part B of arc
- White light strikes a diffraction grating (625 lines/mm) at normal incidence. Part A What is the highest-order visible maximum that is formed? Express your answer to the nearest integer. |VLI ΑΣΦ m = 3 C ?P9 E4A plastic film with index of refraction 1.70 is applied to the surface of a car window to increase the reflectivity and thus to keep the car's interior cooler. The window glass has index of refraction 1.52. Part A What minimum thickness is required if light of wavelength 550 nm in air reflected from the two sides of the film is to interfere constructively? Express your answer with the appropriate units. h = 00 μµÅ Value Units ?
- B7A diffraction grating has 2600 lines/cm. Part A What is the angle between the first-order maxima for red light (A = 680 nm) and blue light (λ = 410 nm)? Express your answer to two significant figures. Ored - blue = VE ΑΣΦ Submit Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining ? Review2 Problem 2 Assume two adjacent interstellar gas clouds with known thickness dị and d2 found in front of an astronomical light source. Suppose that this source emits a beam of radiation with known specific intensity 1, as it enters the first cloud of interstellar gas. Calculate the specific intensity I, immediately after this beam has traversed the two clouds of gas. Assume that the densities (p1 and p2) and the opacities (k,1 and ky,2) are constant within the clouds and are known quantities and that these clouds possess no emissivity. (Note the relationship between the opacity and absorption coefficient a, = pk,. See Rybicki and Lightman eq. 1.22.) %3D