Question

26. The interference pattern from a Young's double slit experiment is shown in the figure. Consider the fringe indicated by the arrow. What is the path length difference between the light rays from the two slits that produced this fringe? (a) 0 (e) 2λ (1) 5A/2 (g) 32 (h) More than 3A (b) 2/2 (c) λ Central maximum (d) 31/2

Answer 1

for maxima , necessary condition is that

path difference = n

For maxima, necessary condition is that path difference = n lambda where n = 0, 1, 2 for second bright fringe as indicated by the arrow, n = 2 hence path difference = 2 lambda

where n = 0 , 1 , 2

for second bright fringe as indicated by the arrow , n = 2

hence path difference = 2

For maxima, necessary condition is that path difference = n lambda where n = 0, 1, 2 for second bright fringe as indicated by the arrow, n = 2 hence path difference = 2 lambda