Question

name the ohisical qualtity that can express in light year

Answer 1

Answer:

Light-year. The light-year is a unit of length used to express astronomical distancesand measures about 9.5 trillion kilometres or 5.9 trillion miles. As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in vacuum in one Julian year (365.25 days).

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Answer 2

Answer:

light year is a unit to express extremely long distances such as distance between two solar systems or between two galaxys , etc.

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