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In Young's double slit experiment the ra...

In Young's double slit experiment the ratio of intensitities of bright and dark fringes is 9 this means that

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The correct Answer is:
B, D
`=((sqrt(I_(1))+sqrt(I_(2)))^(2))/((sqrt(I_(2))+sqrt(I_(2)))^(2))=(9)/(1)`
By checking the options `I_(1)=4` unit. `I_(2)=1` units.
and `(A_(1))/(A_(2))=sqrt((I_(1))/(I_(2)))=2`
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