Question

The definition of 1 K as per the internationally accepted temperature scale is

• A. $1/{100}^{th}$ the difference between normal boiling point and normal freezing point of water
• B. $1/{273.15}^{th}$ the normal freezing point of water
• C. 100 times the difference between the triple point of water and the normal freezing point of water
• D. $1/{273.16}^{th}$ of the triple point of water

Answer 1

The correct option is D $1/{273.16}^{th}$ of the triple point of water

The kelvin (abbreviation K), is the standard international (SI) unit of thermodynamic temperature. One kelvin (1 K) is formally defined as $1/{273.16}^{th}$ of triple point of water.