Index of refraction can be calculated using the following formula:
where 
in a vacuum and "n" is the index of refraction. So we must calculate our velocity by manipulating the index of refraction formula and isolate v and so:
We could go one by one and calculate the velocity or use logic. If you divide by a larger number the output will be a smaller number. Therefore, the answer would be n=1.62 is the slowest.
By that logic when n=1 light would travel the fastest of these four scenarios. The key thing to understand about these problems is that the speed of light slows down as it goes through a medium, in a vacuum it's 3 x 10^ 8 m/s but as it goes through say air or water light slows down.
Answer:
The mercury in the barometer will go down as there is less air pressing down on the bulb of the barometer to push mercury up.
Explanation:
Answer:
can you please translate to english?
Explanation:
<span>For the question "A light shines up from the bottom of a fish pond.
Which diagram shows the correct path of light as it leaves the water of the pond and hits the air?"
The second diagram is the correct answer.
Water has a higher refractive index than air so the ray of light passing from water to air will be refracted away from the normal (the vertical) towards the surface of the water.</span>
