1. A unit used for measuring very large distances is called a light year. It is the dis3 covered by light in one year . Express light year in metres. Take speed of light 3 x 10 m s.
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A unit used for measuring very large distances is called a light year. It is the dis3 covered by light in one year . Express light year in metres. Take speed of light 3 x 10 m s.
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