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Why do we have different units for the s...

Why do we have different units for the same physical quantity?

Text Solution

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To measure the same physical quantity we have different units by keeping magnitude of the quantity to be measured.
Example:
1. The measure astronomical distances we will use light year.
1 light year=`9.468 times 10^15` m
2. To measure atomic distances we will use Angstrom A (or) Fermi.
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