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Ratio of amplitude of two coherent sources is 5:2. Ratio of intensity of fringes of constructive and destructive interference for stationary interference of these wave is.....

Answer»

`(49)/(9)`
`(25)/(4)`
`(3)/(7)`
`(5)/(2)`

Solution :`(E_(1))/(E_(2))=(5)/(2)`
`:. ((E_(1)+E_(2))^(2))/((E_(1)-E_(2))^(2))=((7)^(2))/((3)^(2))=(49)/(9)`
`:. (I_(max))/(I_(min))=(49)/(9)`


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