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Chapter 32: Problem 21
Find the minimum thickness of a soap film \((n=1.333)\) in which 550 -nm light will undergo constructive interference.
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Find the angular position of the second-order bright fringe in a double-slit system whose slit spacing is \(1.5 \mu \mathrm{m}\) for (a) red light at \(640 \mathrm{nm},\) (b) yellow light at \(580 \mathrm{nm},\) and (c) violet light at \(410 \mathrm{nm}\).
One arm of a Michelson interferometer is \(42.5 \mathrm{cm}\) long and is enclosed in a box that can be evacuated. The box initially contains air, which is gradually pumped out. In the process, 388 bright fringes pass a point in the viewer. If the interferometer uses light with wavelength \(641.6 \mathrm{nm},\) what's the air's refractive index?
In a five-slit system, how many minima lie between the zerothorder and first- order maxima?
The interference pattern from two slits separated by \(0.37 \mathrm{mm}\) has bright fringes with angular spacing \(0.065^{\circ} .\) Find the light's wavelength.
While driving at night, your eyes' irises dilate to 3.1 -mm diameter. If your vision were diffraction limited, what would be the greatest distance at which you could see as distinct the two headlights of an oncoming car, spaced \(1.5 \mathrm{m}\) apart? Take \(\lambda=550 \mathrm{nm}\).
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