![A student studies that the speed of light in air is 300000 kms/ sec where that of speed in a glass slab is about 197000 kms/ sec. What causes the difference in A student studies that the speed of light in air is 300000 kms/ sec where that of speed in a glass slab is about 197000 kms/ sec. What causes the difference in](https://www.gkseries.com/blog/wp-content/uploads/2022/05/A-student-studies-that-the-speed-of-light-in-air-is-300000-kms.png)
A student studies that the speed of light in air is 300000 kms/ sec where that of speed in a glass slab is about 197000 kms/ sec. What causes the difference in
Space Medicine Hq #Daporijo - The modern value for the rate of expansion of the universe is 74 kilometers per second per megaparsec. One megaparsec is equal to 3.3 million light years.
![SOLVED:Physics Light travels at a speed of 299,800 km / s. What is the speed of light to the nearest thousand kilometers per second? SOLVED:Physics Light travels at a speed of 299,800 km / s. What is the speed of light to the nearest thousand kilometers per second?](https://cdn.numerade.com/previews/a362643a-07dc-4291-85ed-60cdf0379782.gif)