Absolute scale of temperature is reproduced in the laboratory by making use of a:

Radiation pyrometer

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Platinum resistance thermometer

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Constant volume helium gas thermometer

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Constant pressure ideal gas thermometer

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Solution

The correct option is C
Constant volume helium gas thermometer

Constant volume helium gas thermometer is used to reproduce absolute scale of temperature in the laboratory. At high pressures and low temperatures, helium behaves like an ideal gas.

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Similar questions

The ideal gas law, which relates the P, V and temperature T of an ideal gas in a closed box, given as PV = nRT, can be manipulated to construct an effective thermometer. A "constant volume gas thermometer” uses a sample of gas (commonly, nitrogen or helium) in a closed chamber, thus fixing the volume V. The temperature is then measured by reading off the corresponding pressure P. At the freezing point of water, it is seen that a gas thermometer records a pressure of 0.9 x 10⁵ Pa; it also records a pressure of 1.2 x 10⁵ Pa at the boiling point of water. What pressure will you find in the gas chamber at a room temperature of 23⁰C?

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