p36_027 - 27. (a) To get to the detector, the wave from S1...

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27. (a) To get to the detector, the wave from S 1 travels a distance x and the wave from S 2 travels a distance d 2 + x 2 . The phase diFerence (in terms of wavelengths) between the two waves is p d 2 + x 2 x = m =0 , 1 , 2 ,... where we are requiring constructive interference. The solution is x = d 2 m 2 λ 2 2 . The largest value of m that produces a positive value for x is m = 3. This corresponds to the maximum that is nearest S 1 ,at x = (4 . 00 m) 2 9(1 . 00 m) 2 (2)(3)(1 . 00 m) =1 . 17 m . ±or the next maximum, m =2and x =3 . 00 m. ±or the third maximum,
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.

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