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# youngs slit experiment. wjec watch

1. Hi there, i dont knows whats wrong but i am stoned onto this question -.-..
its pretty staright
lamda= ay/d -.-

a= no idea at first i thought of subtracting 1.20- 0.80 (mm) to get 0.40 mm which is 0.4x10^-3 m , divide that by 0.2 .
for fringe separations: 0.32/ 8? maybe.. i am totally lost here T.T .
2. (Original post by ibysaiyan)
Hi there, i dont knows whats wrong but i am stoned onto this question -.-..
its pretty staright
lamda= ay/d -.-

a= no idea at first i thought of subtracting 1.20- 0.80 (mm) to get 0.40 mm which is 0.4x10^-3 m , divide that by 0.2 .
for fringe separations: 0.32/ 8? maybe.. i am totally lost here T.T .
xx
3. anyone? =/ i really dont get this one.. would i simply take y to be = 0.32 cm?

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