A thermocouple using iron and copper produces an emf of $E_1$ when its junctions are kept at $0^\circ C$ and $100^\circ C$. If the cold junction is kept at $-20^\circ C$ and the emf is $E_2$, what is the temperature of the hot junction?

What is absolute zero in Celsius?

The resistance of the wire in the platinum resistance thermometer at ice point is 5$\Omega$ and at steam point is 5.25$\Omega$.When the thermometer is inserted in an unknown hot bath its resistance is found to be 5.5$\Omega$. The temperature of the hot bath is

The freezing point on a thermometer is marked as ${20^0}C$ and the boiling point as ${150^0}C$. A temperature of ${60^0}C$ on this thermometer will be read as

A platinum resistance thermometer reads ${0^0}C$ when its resistance is 80 $\Omega$ and ${100^0}C$ when its resistance is 90$\Omega$. Find the temperature at the platinum scale at which the resistance is 86$\Omega$

Two temperature scales A and B are related by $\frac{{A - 42}}{{110}}$ = $\frac{{B - 72}}{{220}}$. At which temperature two scales have the same reading?

Thermoelectric thermometer is based on

Oxygen boils at $\left( { - {{183}^ \circ }C} \right).$ The temperature on the Fahrenheit scale is

The resistance of the wire in the platinum resistance thermometer at ice point is 5$\Omega$ and at steam point is 5.25$\Omega$.When the thermometer is inserted in an unknown hot bath its resistance is found to be 5.5$\Omega$. The temperature of the hot bath is

At a common temperature, a block of wood and a block of metal feel equally cold or hot. The temperature of block of wood and block of metal are

Which of the following is the SI unit of temperature?