ch36-p029 - 29. (a) The first minimum in the diffraction...

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λ= c f = × × 300 10 220 10 136 10 8 9 3 . .. ms Hz m Thus, θ = F H G I K J = × × F H G I K J −− sin . . 11 3 2 3 122 122 136 10 550 10 302 10 λ d m m rad c h The angular width of the central maximum is twice this, or 6.04 × 10 –3 rad (0.346°). (b) Now λ = 1.6 cm and d = 2.3 m, so = × F H G I K J . 1 2 3 122 16 10 23 85 10 m m rad c h The angular width of the central maximum is 1.7 × 10 –2 rad (or 0.97°). 29. (a) The first minimum in the diffraction pattern is at an angular position
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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