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

A beam of light consisting of two wavelengths, 6500 Å and 5200Å , is

1.	A beam of light consisting of two wavelengths, 6500 Å and 5200Å , is used, to obtain, interference fringes in a Young’s double slit experiment Q(a) Find the distance of the third bright fringe on the screen from the central maximum for wavelength 6500 Å .) What is the least distance form the central maximum where the bright fringes due to bothwavelengths coincide? The distance between the slits is 2 mm and the distance between the plane of slits and p the screen is 120 cm.
Answer» ANSWER :(a) 1.17 MM(B) 1.56 mm

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