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Consider the situation shown in figure. The two slits `S_1 and S_2` placed symmetrically around the central line are illuminated by a monochromatic light of wavelength `lamda`. The separation between the slits is d. The light transmitted by the slits falls on a screen `Sigma_1` placed at a distance D from the slits. The slit `S_3` is at the placed central line and the slit `S_4`, is at a distance z from `S_3`. Another screen`Sigma_2` is placed a further distance D away from 1,1. Find the ratio of the maximum to minimum intensity observed on `Sigma_2` if z is equal to a. `z=(lamdaD)/(2d)` b. `(lamdaD)/d` c. `(lamdaD)/(4d)`

A

`2,25,oo`

B

`1 , oo 34`

C

`1, oo 30`

D

`10,0,20`

Text Solution

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The correct Answer is:
B
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