Que: In double slit diffraction what should be the ratio of a & b such that, the central diffraction maximum contains exactly seven interference fringes. what must be the ratio if the central maximum contains exactly five fringes? 'a' is slit width and 'b' is the separation between the two slits.
Sol.
case when central
diffraction maximum contains exactly seven interference fringes
Ans b/a =3
case when central
diffraction maximum contains exactly five interference fringes
Ans b/a =2
to try it yourself by varying b and a independentlyclick here.
Use above link to check variation keeping a constant and b ,variable this will change number of interference maxima within diffraction maximum, then keeping b constant and varying a will change width of diffraction maxima. Post comments if any
Use above link to check variation keeping a constant and b ,variable this will change number of interference maxima within diffraction maximum, then keeping b constant and varying a will change width of diffraction maxima. Post comments if any
ReplyDeleteGreat thanks!
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