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The intensity, at thecentral maxima (0) in aYoung's double slit set upis 10. If the distance OPx above P) equals onethird of the fringe widthof the pattern, show thatthe intensity, at point Pwould be equal to I0/4.Distance of the screenfrom the slits is D.Distance between thetwo slits is d and opex
The intensity at a distance y from central maxima is given by,I = I0cos2(πdy/(λD))Now y = x = Fringe width/3 = λD/3dHence,I = I0cos2(πdy/(λD)) = I0cos2(π/3) = = I0/4
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