In the arrangement shown ,a screen is placed normal to the joining the two point coherent sources S_(1) andS_(2) .The interference patternconsists circles. lambda is thewavelength of light (D gt gt d). If d = 0.5 mm, lambda = 5000 A^(0) , D = 1 m , at the point .O. lying on he intersection of screenand the line joining the sources, the orfer of the fringe formed is

In the arrangement shown ,a screen is placed normal to the joining the

1.	In the arrangement shown ,a screen is placed normal to the joining the two point coherent sources S_(1) andS_(2) .The interference patternconsists circles. lambda is thewavelength of light (D gt gt d). If d = 0.5 mm, lambda = 5000 A^(0) , D = 1 m , at the point .O. lying on he intersection of screenand the line joining the sources, the orfer of the fringe formed is
Answer» 1000th DARK FRINGE 1000th bright fringe 998th dark fringe 998th bright fringe Answer :B

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