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Two slits spaced 0.15 mm apart are placed 75.0 cm from a screen. An interference pattern is observed on the screen with adjacent bright fringes spaced 2.75 mm apart. What is the wavelength of the light? (Give your answer in nm.) Answer:

Two slits spaced 0.15 mm apart are placed 75.0 cm from a screen. An interference pattern is observed on the screen with adjacent bright fringes spaced 2.75 mm apart. What is the wavelength of the light? (Give your answer in nm.) Answer:

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Two slits spaced 0.15 mm apart are placed 75.0 cm from a screen. An interference pattern is observed on the screen with adjacent bright fringes spaced 2.75 mm apart. What is the wavelength of the light? (Give your answer in nm.) Answer: Coherent light that contains two wavelengths, 660 nm (red) and 470 nm (blue), passes through two narrow slits that are separated by 0.300 mm. Their interference pattern is observed on a screen 4.00 m from the slits. What is the distance on the screen between the first order bright fringes for the two wavelengths? (Give your answer in mm.) Answer: X Answer: X Coherent light with wavelength 600 nm passes through two very narrow slits and the interference pattern is displayed on a screen 0.80 m from the slits. 13 bright fringes are observed with a spacing of 4.00 cm between the center of the outside fringes. What is the spacing between the two slits? (Give your answer in micrometers.) X
Transcribed Image Text:Two slits spaced 0.15 mm apart are placed 75.0 cm from a screen. An interference pattern is observed on the screen with adjacent bright fringes spaced 2.75 mm apart. What is the wavelength of the light? (Give your answer in nm.) Answer: Coherent light that contains two wavelengths, 660 nm (red) and 470 nm (blue), passes through two narrow slits that are separated by 0.300 mm. Their interference pattern is observed on a screen 4.00 m from the slits. What is the distance on the screen between the first order bright fringes for the two wavelengths? (Give your answer in mm.) Answer: X Answer: X Coherent light with wavelength 600 nm passes through two very narrow slits and the interference pattern is displayed on a screen 0.80 m from the slits. 13 bright fringes are observed with a spacing of 4.00 cm between the center of the outside fringes. What is the spacing between the two slits? (Give your answer in micrometers.) X
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Fringe width in the interference pattern:

The fringe width is the distance between two consecutive bright or two consecutive dark fringes formed in the interference pattern of two slits. The fringe width is given by the expression,

beta equals fraction numerator lambda D over denominator d end fraction                                                 (1)

where beta is the fringe width, lambda is the wavelength of light, D is the distance of slits from the screen, and d is the distance between the two slits.

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