A light year is a measure of : a)Speed b)Velocity c)Distance d)TimeCorrect answer is option 'C'. Can you explain this answer?

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A light year is a measure of :

a)
Speed
b)
Velocity
c)
Distance
d)
Time

Correct answer is option 'C'. Can you explain this answer?

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A light year is a measure of : a)Speed b)Velocity c)Distance d)TimeCor...

A light-year is a unit of length equal to just under 10 trillion kilometres (or about 6 trillion miles). As defined by the International Astronomical Union (TAU), a light-year is the distance that light travels in a vacuum in one Julian year. Note that the lightyear is a measure of distance (rather than, as is sometimes misunderstood, a measure of time).

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A light year is a measure of : a)Speed b)Velocity c)Distance d)TimeCor...

Explanation:

A light year is a unit of measurement commonly used in astronomy to measure extremely large distances. It is defined as the distance that light travels in one year in a vacuum, which is approximately 5.88 trillion miles (9.46 trillion kilometers).

Distance Measurement:

Light years are used to measure distances between stars, galaxies, and other celestial objects. Since the distances between these objects are so vast, it is more practical to use light years instead of miles or kilometers.

Comparison to Other Units:

One light year is equivalent to about 63,240 astronomical units (AU), which is the average distance between the Earth and the Sun. It is also equivalent to about 0.3066 parsecs, another unit of astronomical measurement.

Not a Measure of Time:

Although the term "year" is used in the name, a light year is not a measure of time. It is a measure of distance, specifically the distance that light travels in one year.

Conclusion:

In summary, a light year is a unit of measurement used in astronomy to measure large distances between celestial objects. It is not a measure of speed, velocity, or time, but rather a measure of distance that is based on the speed of light.

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