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Two sources with intensity 9 :4 interfer...

Two sources with intensity `9` :`4` interfere in a medium. Then find the ratio of maximum to the minimum intensity in the interference pattern.

Text Solution

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`I_(max)=(sqrt9l_0+sqrt4l_0)^2=25 l_0`
`I_(min)=(sqrt9l_0-sqrt4l_0)=l_0`
`I_(max)/I_(min)=25/1`
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