Question

Define absolute zero and absolute tscale of temperature.
Write the relationship between ${}^{\circ }C$ and K.

Answer 1

Part a) Absolute zero is the lower limit of the thermodynamic temperature scale. Absolute zero temperature is 0 Kelvin.

Celsius (or Centigrade ℃), is the temperature scale used in the S.I. system and is the most common scale in use.
Kelvin [K] is the scale used in Scientific work and Calculations.
and the 0℃ = 273.15 K
To convert °Celsius to Kelvin, the relationship is

Kelvin = °Celsius + 273.15

Note: It means to convert the °Celsius to Kelvin, just add 273.15 with Celsius value.