Question

18. In Young's double slit experiment, the two slits are separated by a distance of 1.5 mm and the
screen is placed 1 m away from the plane of the slits. A beam of light consisting of two
wavelengths 650 mm and 520 nm is used to obtain interference fringes. Find
(a) the distance of the third bright frmge for 2 = 520 mm on the screen from the central
maximm.
(b) the least distance from the central maximum where the bright fringes due to both the
wavelengths coincide.​

Answer 1

Explanation:

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