[理工] [物理] 光波干涉
※ [本文轉錄自 Grad-ProbAsk 看板 #1C570LF7 ]
作者: sancra (Lab Pub Orz...) 看板: Grad-ProbAsk
標題: [理工] [物理] 光波干涉
時間: Sun Jun 13 13:43:46 2010
題目
As the spacing of the slits in a two-slit interference experment
with a fixed wavelength increases, the angle at which the first-order
bright fringe occurs
(a) increases (b) decreases (c) remains the same
答案是(a) increases
可是根據題目的說法 dsinθ=mλ
d increases
m the same
λthe same
那sinθ要 decreases
所以angle應該要 decreases才對阿
為什麼答案是(a)??
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06/14 17:18, , 1F
06/14 17:18, 1F