Consider two thin parallel slits in an opaque strip of plastic. The strip is placed in large box filled with air. When coherent light passes through the slits, the first interference minima are at +/- 37.3 degrees on either side of the bright central spot of the interference pattern. The air in the box containing the plastic strip is replaced with a liquid. When coherent light passes through the slits, the first interference minima are now located at +/- 18.2 degrees on either side of the bright central spot. What is the index of refraction of the liquid?
Consider two thin parallel slits in an opaque strip of plastic. The strip is placed in large box filled with air. When coherent light passes through the slits, the first interference minima are at +/- 37.3 degrees on either side of the bright central spot of the interference pattern. The air in the box containing the plastic strip is replaced with a liquid. When coherent light passes through the slits, the first interference minima are now located at +/- 18.2 degrees on either side of the bright central spot. What is the index of refraction of the liquid?
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XXVII
Transcribed Image Text:Consider two thin parallel slits in an opaque strip of plastic. The strip is placed in large box filled with air. When
coherent light passes through the slits, the first interference minima are at +/- 37.3 degrees on either side of the
bright central spot of the interference pattern. The air in the box containing the plastic strip is replaced with a
liquid. When coherent light passes through the slits, the first interference minima are now located at +/- 18.2
degrees on either side of the bright central spot.
What is the index of refraction of the liquid?
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