Dimensional Formula of a Light Year
One light-year is defined as the distance a light beam travels in a year. It is used to communicate galactic distances. It is almost equal to 6 trillion miles (9.7 trillion km). According to the International Astronomical Union, a light-year is a distance travelled by light in a Julian year. The light-year unit first appeared […]
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Class 11, IIT JEE, Physical World and Measurement, Physics, Units and dimensions