Question

To convert Kelvin scale to Celsius scale
A.Add 273 to Kelvin scale
B.Subtract 273 from Kelvin Scale
C.Multiply 273 with Kelvin
D.Divide 273 by Kelvin Scale

Answer 1

Hint: Temperature of a system is a direct translation of the energy of the given system. It expresses the amount of heat that a given system emits. Now, temperature can be measured with the help of various units of measurements like the Fahrenheit Scale, the Kelvin Scale, Celsius Scale.

Complete step by step answer:
Before we move forward with the solution of the given question, let us first understand some important basic concepts. All these scales vary in their calibration and sometimes even in the measure of a single unit. In the given question, we have asked about the Celsius scale and the Kelvin Scale. Let us then discuss about both these temperature scales:
1. Kelvin Scale: The Kelvin Scale is calibrated around the physical properties of water. The freezing point of water is set as 273 K. All the other measurements are made around this quantity. The lowest possible temperature that can be physically attained is 0K. There are o negative readings on the Kelvin Scale.
2. Celsius Scale: Similar to Kelvin Scale, the Celsius Scale is also calibrated on the physical properties of water. The freezing point of water is set as \[0^\circ C\]. All the other measurements are made around this quantity. Since, the difference between the freezing points of water on kelvin and Celsius scale is 273 units, then, we can say that to convert Kelvin scale to Celsius scale we must subtract 273 from Kelvin Scale.

Hence, Option B is the correct option

Note: Also, the measure of 1 unit on the kelvin scale and one unit on the Celsius scale is exactly the same. The difference between these two can be understood as the origin point of these scales. \[0^\circ C\] is the freezing point of water while 0K is the lowest possible attainable temperature.