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Question
Name the three convenient units used to measure length ranging from very short to very long value. How are they related to the S.I unit?
Solution
Three convenient units of length and their relation with the S.I. unit of length:
(1) 1 Angstrom (Å) = 10-10 m
(2) 1 kilometre (km) = 103 m
(3) 1 light year (ly) = 9.46 × 1015 m
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