Last Updated On 16-03-2023 - By Jeesha Sara
In a double-slit experiment, green light (5303 Å) falls on a double slit having a separation of 19.44 
m and a width of 4.05 
m. The number of bright fringes between the first and the second diffraction minima is:
Question ID - 50349 :- In a double-slit experiment, green light (5303 Å) falls on a double slit having a separation of 19.44 m and a width of 4.05 m. The number of bright fringes between the first and the second diffraction minima is:
In a double-slit experiment, green light (5303 Å) falls on a double slit having a separation of 19.44 m and a width of 4.05 m. The number of bright fringes between the first and the second diffraction minima is:
For diffraction location of 1st minima
y1 = 
= 0.2469D
Q
location of 2nd minima
y2 = 
=0.4938D
Now for interference Path difference at P.
= 4.8
path difference at Q
= 9.6
So orders of maxima in between P & Q is 5, 6, 7, 8, 9
So 5 bright fringes all present between P & Q.
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The intercepts on the straight line |
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