CONCEPT: - Temperature: A physical quantity that measures the degree of hotness or coolness of the body is known as Temperature. - Temperature is measured in Celsius (‌∘C), Fahrenheit (‌∘F), and Kelvin. - Absolute temperature Scale:The Kelvin scale is an absolute temperature scale. When the temperature is measured in Kelvin. - This means that the theoretically lowest possible temperature is assigned the value of zero. - Absolute Zero: Zero degrees on the Kelvin scale is known asabsolute zero i.e. 0K. - It is theoretically the point at which there is no molecular motion to produce thermal energy. - Degree Celsius and Kelvin are the standard units of the temperature. - The relation between Degree Celsius and kelvin is givenby: ⇒K=C+273.15∘C EXPLANATION: Absolute temperature, K=0 kelvin ⇒K=C+273.15‌∘C ⇒C=0−273.15=−273.15∘C ⇒C=−273.15∘C - Absolute zero temperature is 0 Kelvin temperature. -Each division in the kelvin scale called a kelvin (K) is equal to a degree on the celsius scale, but the difference is where zero is. - On the Celsius scale, 0 degrees is the freezing point of water while in the Kelvin scale the zero points are atabsolute zero. - Therefore, 0K is equal to -273.15 C, 0C is equal to 273.15 kelvins.