Physics 2006 JAMB Past Questions - Question 48: the thermometric property of a constant volume thermometer is

Correct Answer

A

Explanation

the thermometric property of a constant volume thermometer is change in pressure with temperature.The thermometric property of a constant volume thermometer is pressure. In a constant volume thermometer, the volume of the gas or liquid inside the thermometer is held constant, typically at a fixed value. As temperature changes, the pressure of the gas or liquid also changes. This change in pressure is used to measure the temperature.

The ideal gas law, which relates pressure (P), volume (V), and temperature (T), is often used to describe the behavior of gases in such thermometers. The relationship is given by:

PV = nRT

Where:
- P is the pressure of the gas.
- V is the volume of the gas (held constant in this case).
- n is the number of moles of gas.
- R is the gas constant.
- T is the absolute temperature.

As the temperature T changes, the pressure P inside the constant volume thermometer will change, and this pressure change is used as the basis for temperature measurement. This is the fundamental principle behind constant volume gas thermometers and other similar devices used for precise temperature measurement.