Question

Two coherent sources whose intensity ratio is :81.1, produce interference fringes.calculate the intensities of Maxima and minima in the fringe​

Answer 1

SEE THE ATTACHMENT:)

I hope it's help for you ☺️

Answer 2

It is given that I1/I2=(81/1)

so,I1/I2=(A1)^2/(A2)^2

it is given that ratio of the intensities of maxima and minima is x/y

so,x/y=(√I1+√I2)^2/(√I1-√I2)^2

x/y=(√81+1)^2/(√81-1)^2

x/y=(10)^2/(8)^2=100/64=25/16

so your answer is 25:16

thanks