Practice B.4 Thermodynamics (HL only) with authentic IB Physics exam questions for both SL and HL students. This question bank mirrors Paper 1A, 1B, 2 structure, covering key topics like mechanics, thermodynamics, and waves. Get instant solutions, detailed explanations, and build exam confidence with questions in the style of IB examiners.
A gas expands adiabatically. A student records its pressure and volume and plots the graph below:
What is the most likely quantity on the x-axis?
Which of the following processes can be represented as a vertical line on a PV diagram for an ideal gas?
Which statement is a consequence of the second law of thermodynamics in terms of statistical mechanics?
Which expression defines entropy change for a reversible process?
An ideal monatomic gas expands adiabatically from volume to . If its initial temperature is , what is its final temperature?
Which of the following is a correct statement of the second law of thermodynamics?
Three statements about entropy are:
I. The entropy of a non-isolated system can locally decrease.
II. The change in entropy of a system during a process is directly proportional to the temperature at which a process is carried out.
III. The entropy of gas molecules in a sealed container is proportional to the number of possible microstates of the molecules.
Which of these statements is/are correct?
Which process necessarily involves an increase in the total entropy of the universe?
Which of the following correctly expresses the first law of thermodynamics?
A sample of monatomic ideal gas undergoes a process in which it absorbs of thermal energy and does of work on the surroundings.
State the first law of thermodynamics.
Calculate the change in internal energy of the gas.
Explain whether the temperature of the gas increases, decreases, or remains constant.