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In double slit experiment, SS2 is greate...

In double slit experiment, `SS_2` is greater than `SS_1` by 0.25 `lamda` . Calculate the path difference between two interfering beams from `S_1` and `S_2` for minima and maxima on the screen.

Text Solution

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Path difference between interfering waves
`(SS_1 + S_2P) - (SS_1 + S_1P)`
` = (S_2P - S_1 P) + (SS_2 - SS_1)`
` d/D lamda + 0.25 lamda`
For maximum
` d/D y + 0.25 lamda = n lamda`
or ` d/D y = ( n- 0.25) lamda`
for minimum ` d/D y + 0.25 lamda`
` (2n +1 ) lamda/2`
` d/D y = (2n +1) lamda/2 - 2 xx 0.25 xx lamda/2`
`d/D y = (2n + 0.5) lamda/2`
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