作业帮200分求一道物理题,求帮助 各种求 懂英文的高手嘞
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200分求一道物理题,求帮助 各种求 懂英文的高手嘞
Light with a wavelength of 544.6 nm strikes a single slit that is 0.4 mm wide. The diffraction pattern produced by the slit is observed on a wall a distance of 1.4 m from the slit.
(a) What is the distance from the center of the pattern to the first dark fringe?
多少毫米
(b) How wide is the central bright fringe of this diffraction pattern?
多少毫米
Light with a wavelength of 544.6 nm strikes a single slit that is 0.4 mm wide. The diffraction pattern produced by the slit is observed on a wall a distance of 1.4 m from the slit.
(a) What is the distance from the center of the pattern to the first dark fringe?
多少毫米
(b) How wide is the central bright fringe of this diffraction pattern?
多少毫米
(a) the distance=Ltanθ=Lθ=Lλ/a=1400*544.6×10^(-6)/0.4mm=1.9mm
(b) the wideth=2Ltanθ=3.8mm
(b) the wideth=2Ltanθ=3.8mm