YDSE
Classical Mechanics
Level
2
If fringe width between the first and second bright spot is 36 mm what is the fringe width between fourth and fifth consecutive dark spots?
The answer is 36.
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1 solution
fringe width is directly proportional to Distance between slits and the screen . fringe width is directly proportional to wavelength of incident light. fringe width is inversely proportional to distance between the two slits. Fringe width doesnot depend on the order , that means fringe width between 1st and 2nd consecutive bright spot is same as fringe width between 4th and 5th consecutive dark spot . It doesnot depend on "n"