Question

Write a short note on the speed of light.​

Answer 1

Answer:

The speed of light in empty space is a universal physical constant. Physicists often use the letter c to denote the speed of light in empty space (vacuum). ... It is exactly 299,792,458 metres per second (983,571,056 feet per second) by definition.

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Answer 2

Explanation:

The speed of light in a vacuum is 186,282 miles per second (299,792kilometers per second ), and in a theory nothing can trave faster than light . in miles per hour, light speed is, well, a lot : about 670,616,629mph. If you could travel at the speed of light, you could go the earth 7.5 times in one second.