A monochromatic (single wavelength) light is incident on a 400 lines/mm diffraction grating. The 1st-order fringe on screen is 20.0 cm from the oth-order fringe. If the screen is placed 1.0 m away, a. Determine the wavelength of the incident light. b. How far from the oth-order fringe is the 3rd - order fringe?

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Chapter4: Diffraction
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Problem 89AP: Monochromatic light of wavelength 530 nm passes through a horizontal single slit of width 1.5 m in...
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A monochromatic (single wavelength) light is incident on a 400 lines/mm diffraction grating.
The 1st-order fringe on screen is 20.0 cm from the 0th-order fringe. If the screen is placed
1.0 m away,
a. Determine the wavelength of the incident light.
b. How far from the 0th-order fringe is the 3rd - order fringe?
Transcribed Image Text:A monochromatic (single wavelength) light is incident on a 400 lines/mm diffraction grating. The 1st-order fringe on screen is 20.0 cm from the 0th-order fringe. If the screen is placed 1.0 m away, a. Determine the wavelength of the incident light. b. How far from the 0th-order fringe is the 3rd - order fringe?
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