1.

In Young's double slit experiment if the widths of the slits are in the ratio 4 : 9, rstio of intensity of maxima to intensity of minima will be :

Answer»

`25 : 1`
`9 :4`
`3 : 2`
`81 : 16`

SOLUTION :`(W_(1))/(W_(2)) = (I_(1))/(I_(2)) = 9/4`
`therefore (a_(1)^(2))/(a_(2)^(2)) = 9/4" (a_(1))/(a_(2)) = 3/2 `
`a_(max) = a_(1) +a_(2) " a_(min) = a_(1) - a_(2)`
`therefore (I_(max))/(I_(min)) = (a_(1) + a_(2))^(2)/(a_(1) - a_(2)) = 25/1`


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