For a constant volume gas thermometer select the correct statement.
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a
It doesn’t use mercury for pressure measurement
b
We actually measure the pressure at constant volume and the scale is calibrated to give the temperature reading
c
Any high density gas can be used
d
Pressure ∝ Temp2
answer is B.
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Detailed Solution
A constant volume gas thermometer has a mercury manometer connected to a gas bulb. With increase in temperature of the bulb, its volume is kept constant by external methods and the pressure of gas increases. The temperature scale is defined as a function of this pressure. (T = kP, where k is a constant).