In SI system, the unit of temperature is:
Correct answer: A. Kelvin
- A. Kelvin
- B. Degree centigrade
- C. Degree Fahrenheit
- D. Degree Celsius
Explanation
The kelvin (K) is the base unit of temperature in the SI system. It is defined based on the properties of matter and is the unit used for scientific and international temperature measurements. The Kelvin scale is an absolute temperature scale with 0 K representing absolute zero, the lowest possible temperature where particles have minimal thermal motion.
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About Measurements
Physical quantities are expressed with SI base and derived units, while measurement limits are described through accuracy, precision, absolute and percentage error, and significant figures. Dimensional analysis checks equations, derives relationships and detects inconsistent units, but it cannot determine numerical constants or distinguish quantities with identical dimensions.
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