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Unformatted text preview: 11. (a) θ = sin–1 (0.011 m/3.5 m) = 0.18°.
(b) We use Eq. 366: α= .
FG πa IJ sinθ = πb0.025 mmg sin 018° = 0.46 rad .
HλK
538 × 10 mm
−6 (c) Making sure our calculator is in radian mode, Eq. 365 yields b g FG
H Iθ
sin α
=
Im
α IJ
K 2 = 0.93 . ...
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 Spring '08
 Any
 Physics

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