In this case n0<n1;n2<n1(1<1.5;1.4<1.5)n_0<n_1; n_2<n_1(1<1.5;1.4<1.5)n0<n1;n2<n1(1<1.5;1.4<1.5).
So, the phase changes are not common to both surfaces. For destructive interference
λ=2dn2m,where\lambda=\frac{2dn_2}{m}, whereλ=m2dn2,where m=1,2,3,4,5,....m=1,2,3,4,5,....m=1,2,3,4,5,....
We have
λ5=600nm\lambda_5=600nmλ5=600nm
λ6=500nm\lambda_6=500nmλ6=500nm
λ7=428nm\lambda_7=428nmλ7=428nm.
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Thank you, but how do we determine d in that formula?
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Thank you, but how do we determine d in that formula?