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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Related Questions
The condition(s) essential for a unit to be accepted internationally :
- The unit should be of convenient size and without any ambiguity.
- The unit should be reproducible.
- The value of the unit should not change with space and time.
- All of the above.
In mechanics, the three fundamental quantities are:
- Length, mass, velocity
- Mass, time, density
- Mass, time, pressure
- Length, mass, time
The fundamental unit is —
- newton
- pascal
- hertz
- second
Which of the following unit is not a fundamental unit:
- Metre
- Litre
- Second
- Kilogram