The speed of light in a liquid is 2.08 × 10⁸ m/s…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
The speed of light in a liquid is . Find the refractive index of the liquid. Which liquid in the table of the lesson could it be?
Need a reminder? The key ideaShow
The absolute refractive index is , with . It has no unit and is never below . A larger means slower light: optically denser. From material 1 into material 2, .
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. The index. .
Step 2. The table. Kerosene has .
Answer: : it could be kerosene.
Check. No unit, and above , as it must be.
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