First slide

Thermometry

Question

The temperature corresponding to the mid-point of the fundamental interval in the Fahrenheit scale expressed in Kelvin scale is

Moderate

A

323 K
B

122 K
C

373K
D

173 K

Solution

The temperature of mid-point of fundamental interval is average of lower and upper fixed points, namely $122 ° F$ . Convert this to Celsius scale and add 273

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