Posted by BOBert on .
Two lasers are shining on a double slit, with slit separation d. Laser 1 has a wavelength of d/20, whereas laser 2 has a wavelength of d/15. The lasers produce separate interference patterns on a screen a distance 4.90m away from the slits.
1. What is the distance Δy_maxmax between the first maxima (on the same side of the central maximum) of the two patterns?
2. What is the distance Δy_maxmin between the second maximum of laser 1 and the third minimum of laser 2, on the same side of the central maximum?

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bobpursley,
What is your question here? A standard equztion on angles, then a trig triangle to figure distance.

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elliot,
what was your answer? :)

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nicholas,
kinda need it.......... assignment is due in 15 minutes....

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brett,
answer is 9.33×10−2 m

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bob,
and the answer to the second part??