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cupid.callin
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Homework Statement
so here i have shown the distances of two dark fringes ...
from here ... fringe width is [tex]\frac{\lambda L}{2d}[/tex]
L is distance of screen ... d is distance b/w 2 fringes.
but fringe width is [tex]\frac{\lambda L}{d}[/tex] , right ?
What mistake am i making?
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