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A Young.s double slit experiment set up ...

A Young.s double slit experiment set up is completely submerged in a transparent liquid. Which of the following graphs best represent the variation of total number of fringes N observed on the screen with the index of referring `mu` of the liquid?

Text Solution

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If L is the size of the screen and `beta` is the size of a fringe, then `N= (Ld)/(lambda^(|)D)" where "lambda^(|)= (lambda)/(mu)`
`N= ((Ld)/(lambdaD))mu implies N alpha M`
The graph is a straight line, with +ve slope and passing through the origion.
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