GENERAL KNOWLEDGE

Detailed explanation-1: -The SI unit of temperature as per the International System of Units is Kelvin which is represented by the symbol K. The Kelvin scale is widely accepted or used in the field of science and engineering. However, in most parts of the world, Celsius or Fahrenheit scale is used for measuring temperature.

Detailed explanation-2: -The kelvin is the SI unit of thermodynamic temperature, and one of the seven SI base units. Unusually in the SI, we also define another unit of temperature, called the degree Celsius (°C). Temperature in degrees Celsius is obtained by subtracting 273.15 from the numerical value of the temperature expressed in kelvin.

Detailed explanation-3: -Because it is an absolute scale, measurements made using the Kelvin scale do not have degrees. Thus, keeping the concept of absolute temperature in mind we may say that the Kelvin scale is better than the Celsius scale of temperature. Note: Kelvin temperature scale is considered as the SI unit of temperature.

Detailed explanation-4: -The SI unit of temperature, the kelvin (K), is named after the Belfast-born engineer and physicist William Thomson, who became Lord Kelvin in 1892 as a recognition of his achievements in thermodynamics.

Detailed explanation-5: -Hence, the SI unit of temperature is kelvin (K).