Physics
How many units are fundamental and complementary?
- 2 fundamental, 7 complementary
- 3 fundamental, 6 complementary
- 7 fundamental, 2 complementary
- 4 fundamental, 5 complementary
Measurements
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Answer
7 fundamental, 2 complementary
Reason — Fundamental and complementary units are as follows:
| Fundamental Units | Unit | Symbol |
|---|---|---|
| Length | metre | m |
| Mass | kilogram | kg |
| Time | second | s |
| Temperature | kelvin | K |
| Luminous intensity | candela | cd |
| Electric current | ampere | A |
| Amount of substance | mole | mol |
| Complementary Units | Unit | Symbol |
|---|---|---|
| Angle | radian | rd |
| Solid angle | steradian | st-rd |
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