1084_Physics ProblemsTechnical Physics

# 1084_Physics ProblemsTechnical Physics - Chapter 38 425 (d)...

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Chapter 38 425 (d) The longest wavelength that can be reflected with extra strength by these melanin rods is the one we computed first, 500 nm blue-green. (e) If the melanin rods were farther apart (say 0 32 . m µ ) they could reflect red with constructive interference. P38.57 (a) dm sin θλ = or d m == × ° = λ θ sin sin . . 3500 10 32 0 283 9 m m ej Therefore, lines per unit length × 11 283 10 6 d . m or lines per unit length = × −− 3 53 10 3 53 10 51 3 1 .. m c m . (b) sin . . × × = m d m m 500 10 0177 9 6 m m af For sin . 1 00 , we must have m 100 or m 566 Therefore, the highest order observed is m = 5 . Total number of primary maxima observed is 21 1 1 m += . P38.58 For the air-to-water interface, tan . . p n n water air 133 p 53 1 . and 1 00 1 33 2 . sin . sin a f a f θθ p = 2 1 53 1 36 9 = ° F H G I K J sin sin . . For the water-to-glass interface,
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## This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .

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