Young's Double Slit Experiment Video Lessons

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Problem: Two very narrow slits are illuminated by monochromatic coherent light in air that has wavelength 560 nm and the interference pattern is observed on a screen that is 4.00 m from the slits. The first interference minima are located at ∓58.0° on either side of the central bright band. You then immerse the slits and the space between the slits and the screen in a transparent liquid and illuminate the slits with the same light. Now the first minima on either side of the central bright band occur at ∓36.0°. What is the refractive index of the liquid?

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Problem Details

Two very narrow slits are illuminated by monochromatic coherent light in air that has wavelength 560 nm and the interference pattern is observed on a screen that is 4.00 m from the slits. The first interference minima are located at ∓58.0° on either side of the central bright band. You then immerse the slits and the space between the slits and the screen in a transparent liquid and illuminate the slits with the same light. Now the first minima on either side of the central bright band occur at ∓36.0°.

What is the refractive index of the liquid?

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Our tutors have indicated that to solve this problem you will need to apply the Young's Double Slit Experiment concept. You can view video lessons to learn Young's Double Slit Experiment. Or if you need more Young's Double Slit Experiment practice, you can also practice Young's Double Slit Experiment practice problems.

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Based on our data, we think this problem is relevant for Professor Mahzoon's class at WUSTL.