A beam of light consisting of two wavelengths, 6500Å and 5200 A is used to obtain interference fringe in a Young's double slit experiment. (a) Find the distance of the third bright fringe on the screen from the central maximum for wavelength 6500 Å. (b) What is the least distance from the central maximum where the bright fringes due to both the wavelengths coincide? The distance between the slits is 2 mm and the distance between the plane of the slits and the screen is 120 cm.
A beam of light consisting of two wavelengths, 6500Å and 5200 A is used to obtain interference fringe in a Young's double slit experiment. (a) Find the distance of the third bright fringe on the screen from the central maximum for wavelength 6500 Å. (b) What is the least distance from the central maximum where the bright fringes due to both the wavelengths coincide? The distance between the slits is 2 mm and the distance between the plane of the slits and the screen is 120 cm.
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Transcribed Image Text:A beam of light consisting of two wavelengths, 6500Å and
5200 Å is used to obtain interference fringe in a Young's
double slit experiment.
(a) Find the distance of the third bright fringe on the screen
from the central maximum for wavelength 6500 Å.
(b) What is the least distance from the central maximum
where the bright fringes due to both the wavelengths
coincide?
The distance between the slits is 2 mm and the distance
between the plane of the slits and the screen is 120 cm.
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