Two in phase sources create circular waves of wavelength lambda, and the interference pattern shows up on the screen with dotted lines showing where constructive interference occurs. What is the optical path length difference between the two sources at point P? λ λ/2 3λ/2 5λ/2
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Two in phase sources create circular waves of wavelength lambda, and the interference pattern shows up on the screen with dotted lines showing where constructive interference occurs. What is the optical path length difference between the two sources at point P?
- λ
- λ/2
- 3λ/2
- 5λ/2
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- The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656 nm (red) and 486 nm (blue). Light from a hydrogen lamp illuminates a diffraction grating with 550 lines/mm , and the light is observed on a screen 1.5 mm behind the grating. What is the distance between the first-order red and blue fringes?A double slit experiment is set up such that the two slits are 1.00 cm apart and are placed 1.20 m from the screen on which the interference pattern will be formed. A monochromatic light source of frequency 6x10^14Hz is then shone onto the slits in order to create the expected pattern of light and dark fringes. Determine the separation of the bright fringes for this experimental set-up. answer = 60µmMonochromatic light of wavelength 650 nm is incident normally on a diffraction grating. If the second-order maximum of the diffraction pattern is observed at 22° from the centerline, what is the distance between the slits of the grating? O 3.5 um 0 1.4 km 2.8 μm O 8.5 km
- A diffraction grating has 2000 lines/cm. What is the angle between the first-order maxima for red light (λ = 720 nm) and blue light (λ = 500 nm)?A slit of width 0.20 mm is illuminated with monochromatic light of wavelength 480 nm, and a diffraction pattern is formed on a screen 1.0 m from the slit. a) What is the width of the central maximum? b) What are the widths of the second- and third-order maxima?The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656 nm (red) and 486 nm (blue). Light from a hydrogen lamp illuminates a diffraction grating with 460 lines/mm, and the light is observed on a screen 1.50 m behind the grating. What is the distance between the first-order red and blue fringes?