PHYSICS

JAMB 2001 - Question 20

Physics 2001 JAMB Past Questions - Question 20: The thermometric substance of an absolute thermometer is

Choose the correct answers from the options given.
The thermometric substance of an absolute thermometer is
A:
B:
C:
D:
Examkits App

Examkit's JAMB CBT App

Practice JAMB offline with our Online, PC and Mobile App

  • ✅ 25+ years of past questions (2000 to 2025)
  • ✅ Video solutions and explanation to questions
  • ✅ E-library
  • ✅ Study by topic
  • ✅ And more.

Correct Answer

B

Explanation

An absolute thermometer, also known as an absolute temperature scale, uses a thermometric substance that has a direct and proportional relationship with temperature. The ideal gas, such as helium or hydrogen, is often used as the thermometric substance for an absolute thermometer. These gases obey the ideal gas law, which states that the pressure, volume, and temperature of an ideal gas are related by the equation:

PV = nRT

Where:
P is the pressure of the gas
V is the volume of the gas
n is the number of moles of gas
R is the gas constant
T is the absolute temperature in Kelvin

In an absolute thermometer, the pressure and volume of the gas are measured, and since the gas obeys the ideal gas law, the temperature can be determined directly from these measurements. This makes it suitable for measuring temperature on an absolute temperature scale, such as the Kelvin scale, where temperature is measured relative to absolute zero (0 Kelvin).

Frequently Asked Questions

Examkits is a JAMB CBT practice platform that provides over 20 years of past questions, Post UTME questions, and detailed video solutions to help students prepare for their exams.

You can practice JAMB past questions online, on Android, or on a desktop using the Examkits app. Just register on our website and choose your preferred device.

Yes. Our Android and Windows versions support offline usage. Once downloaded and activated, no internet is required to use most of the features.

Yes, Examkits provides detailed video explanations for all JAMB past questions from 2000 to 2024, helping students understand how to solve each problem.

Examkits offers free practice for some subjects. However, full access requires a one-time affordable activation fee for each version of the app.