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Q.

What is the value of a light year ____ Km?.


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Detailed Solution

9.46 × 1012 Km or 9.46 trillion Km, is the value of a light year.
A light year is a distance covered by light for a year. We measure distances in kilometres and meters, but because celestial bodies are so far away, it becomes difficult to calculate their distances. To make it easier, we use light years as a distance measurement unit. For example, Proxima Centauri is approximately 40,208,000,000,000 km from Sun, but it is approximately 4.28 light years away when measured in light years.
 
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