Light year is the unit of which physical quantity?
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Light year is the unit of length used to express astronomical distances.
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The light year is one of the units of length that is used for expressing the astronomical distances and also helpful in measuring about “9.46 trillion kilometers” or “5.88 trillion miles”.
EXPLANATION:
It is defined by the union of “International Astronomical Union” (IAU). A “light year” is the distance which the travelling of light in vacuum in ‘1 Julian year’ (365.25 days). The light year is used mostly while expressing the distances of stars and on the galactic scale distances.
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