Why do we have different unit …
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Yogita Ingle 6 years, 8 months ago
Magnitude of any given physical quantity may vary over a wide range, therefore, different units of same physical quantity are required.
For example:
1. Mass ranges from 10-30 kg (for an electron) to 1053 kg (for the known universe). We need different units to measure them like miligram, gram, kilogram etc.
2. The length of a pen can be easily measured in cm, the height of a tree can be measured in metres, the distance between two cities can be measured in kilometres and distance between two heavenly bodies can be measured in light year.
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