Laser light with wavelength 668 nm is directed at a single slit with a width of 0.628 mm. A diffraction pattern from the slit is then measured on a screen 3.78 m away. What is the distance from the first dark fringe above the central bright spot to the first dark fringe below the central bright spot? Give your answer in units of mm.
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- Light from a laser is passed through a mask with two slits separated by 90 um. The light makesan interference pattern on a wall 2.6 m away from the mask. You measure the distance from thecentral bright spot to the first interference maximum to be 1.8 cm. What is the wavelength of thelight?Fringes in the Thomas Young experiment are produced using sodium light of wavelength 513 nm and two slits which are 1.2 mm apart. If the fringes are formed on a screen 1.1 m away from the slits, how far is the third order bright fringe from the middle of the screen? Give your answer in millimeters (mm)A laser light source with wavelength λ = 545 nm is incident on a diffraction grating (as in the figure). The grating has 495 slits per mm. An observation screen is a distance L = 0.35 m from the grating. What is the separation between individual slits in the grating? Be careful with units: 1 nm = 10-9 m, 1 mm = 10-3 m, and 1 cm = 10-2 m. d = nm What is the distance y along the screen where the first-order diffraction peak is observed? y= cm source grating m=1
- A diffraction grating is 3 cm long and has 3000 slits. White light shines through it and creates fringes on a screen 0.7 m away. The first fringe of the color pewter appears 3.4 cm from the central white fringe. What wavelength is this pewter light (in nanometers, nm)** 38. Two plastic plates (index of refraction n = 1.3) are separated by an air gap of 0.9 µm. Analyze the reflections of light of wavelength 600 nm and conclude whether it will be brightly reflected or not. 0.9 um gap ** 39. The air gap in the previous problem is now filled with a mineral oil whose index of refraction is n = 1.5. Analyze the reflections of light of wavelength 600 nm and conclude if it will be brightly reflected or not.You perform a double-slit experiment in order to measure the wavelength of the new laser that you received for your birthday. You set your slit spacing at 1.05 mm and place your screen 8.51 m from the slits. Then, you illuminate the slits with your new toy and find on the screen that the tenth bright fringe is 4.63 cm away from the central bright fringe (counted as the zeroth bright fringe). What is your laser's wavelength i expressed in nanometers? = nm
- You measure three segments of the distance between a diffraction slit an the screen on which the pattern forms: x1 = (15.8 ± 0.2) cm, x2 = (6.7 ± 0.1) cm, and x3 = (11.3 ± 0.1). What is the uncertainty of the total distance x1 + x2 + x3? Group of answer choices 0.4 cm 0.5 cm 0.2 cm 0.3 cm 0.1 cmThe picture shows the interference pattern obtained in a double-slit experiment with monochromatic light of wavelength 650 nm. The distance shown between intensity maxima is y = 4 mm. How far away (in mm) from the central maxima is the location where the two waves have a path difference of exactly 1950 nm?In a double slit experiment the distance between the slits is 0.50 mm and the slits are 1.5 m from the screen. Two interference patterns can be seen on the screen: one due to light with wavelength 480 nm, and the other due to light with wavelength 600 nm. What is the separation on the screen between the third order (m=3) of the bright fringes of the two interference patterns ? [d sin0 = m2 ; m= 0, 1, 2, 3, ...... For bright maxima ]