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Amplitude ratio = root (1st intensity/2nd intensity)
=root(9/1)
=3
I max/I min=(3+1)^2 /(3-1)^2
=16/4
=4
=root(9/1)
=3
I max/I min=(3+1)^2 /(3-1)^2
=16/4
=4
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