If the intensities of the two interferin...

If the intensities of the two interfering beam in Young's double-slit experiment are `I_(1)` and `I_(2)`, then the constrast between the maximum and minimum intensities are good when

`|I_(1)-I_(2)|` is large

`|I_(1)-I_(2)|` is small

either `I_(1)` or `I_(2)` is zero

`I_(1)=I_(2)`

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