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Two sources with intensity I(0) and 4I(0...

Two sources with intensity `I_(0)` and `4I_(0)` respectively interefere at a point in a medium. Then the maximum and minimum possible intensity would be

Text Solution

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`I_(max)=(sqrt(l_(1))+sqrt(l_(2)))^(2)`
Here, `l_(1)=l_(0)` and `l_(2)=4I_(0)`
`:. I_(max)=(sqrt(l_(0))+sqrt(4l_(0)))^(2)=9I_(0)`
and `l_("min")=(sqrt(l_(1))-sqrt(l_(2)))^(2)`
`=l_(0)`
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