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the plasticity index decreases with increase in percent of fly ash because the hydraulic conductivity ( k) goes on increase

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Q: Why plasticity index decrease with increase in percent of fly ash?
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Why refractive index decreases with increase in temperature?

As temperature increases, the average kinetic energy of the atoms or molecules in the material also increases, causing them to vibrate more. This increased vibration disrupts the regular arrangement of atoms or molecules, leading to a decrease in the speed of light within the material, and therefore a decrease in refractive index. Additionally, the increased thermal motion results in more collisions between photons and particles, which can further decrease the refractive index.


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