The temperature of a substance increases by 27°C. On the Kelvin scale this increase is equal to-

Concept:

Celsius scale:

• In this scale lower fixed point (ice point) is taken 0° and upper fixed point  (steam point) is taken 100°.
• The temperature measured on this scale all in degree Celsius (°C).

Fahrenheit scale:

• This scale of temperature has lower fixed point (ice point) as 32° F and upper fixed point  (steam point)as 212° F.
• The change in temperature of 1° F corresponds to a change of less than 1° on Celsius scale.

Kelvin scale:

• The Kelvin temperature scale is also known as thermodynamic scale. The triple point of water is also selected to be the zero of scale of temperature.
• The temperatures measured on this scale are in Kelvin (K).

All these temperatures are related to each other by the following relationship –

Calculation:

T(K) = T(°C) + 273

Let T1 = a1 °C = (a1 + 273) K

T2 = a2 °C = (a2 + 273) K

Change in temperature:

T2 - T1 = (a2 - a1)°C = (a2 - a1) K

Temperature change in Celsius scale = Temperature change in Kelvin scale = 27 K