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  4. Arrange 1 light year (ly), 1 astronomical unit (AU) and 1 parallactic second (par sec) in descending order

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Q. Arrange 1 light year (ly), 1 astronomical unit (AU) and 1 parallactic second (par sec) in descending order

Physical World, Units and Measurements

Solution:

1 par sec = 3.26 ly and 1 ly = 6.3 $\times 10^4$ AU