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प्रश्न
What are the S.I. units of
- mass
- length
- time and
- temperature.
Write their names and symbols.
उत्तर
S.I. units are as follows:
| Quantity | S.I. unit | Symbol of S.I. unit |
| (1) Length | metre | m |
| (2) Mass | kilogram | kg |
| (3) Time | Second | s. |
| (4) Temperature | kelvin | K |
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