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In Young's experiment ratio of maximum and minimum intensities of fringes is 9: 1. Ratio of amplitude of superposing waves = .....

Answer»

`9:1`
`3:1`
`2:1`
`1:1`

Solution :`(I_(max))/(I_(min))= :.(9)/(1)=((E_(1)+E_(2))/(E_(1)-E_(2)))^(2)`
`:. (E_(1)+E_(2))/(E_(1)-E_(2))=(3)/(1) [ :.` Taking SQUARE ROOT]
Now, Taking componendo- dividendo,
`(2E_(1))/(2E_(2))=(3+1)/(3-1) :. (E_(1))/(E_(2))=(2)/(1) =2:1`


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