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Grade: 12th pass
        
how to find the no: of fringes????????????????pls explain
 
one month ago

Answers : (1)

suresh kumar
37 Points
							
as we know from the basic theory, the distance of screen from the slits is D, the point P is at a distance of y from the central maxima, Hence
y= nλD/d
and d is the sepearation between two slits
if the slita are moving apart with the realtive velocity of v
so the separation d is changing with time as v
d = vt
Hence, y= nλD/vt
rearrage them, we get n/t = yv/λD.
Hope it is clear.
one month ago
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