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Unformatted text preview: 26. (a) Let the phase diﬀerence be φ. Then from Eq. 1739, 2ym cos(φ/2) = 1.50ym , which gives
φ = 2 cos−1 1.50ym
2ym = 82.8◦ . (b) Converting to radians, we have φ = 1.45 rad.
(c) In terms of wavelength (the length of each cycle, where each cycle corresponds to 2π rad), this is
equivalent to 1.45 rad/2π = 0.23 wavelength. ...
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 Fall '08
 SPRUNGER
 Physics

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