Physics – Class 11 Practice Test 9

1. Zeroth law of thermodynamics can be derived. It is not based on observation. True or False?

2. Boyle’s law can be deduced from kinetic theory. True or False?

3. A body has a temperature of 200°C and is kept in a room containing air at 25°C. We can use Newton’s law of cooling. True or False?

4. When the state changes from A to B, what will happen to internal energy?

5. A process is carried out between 2 systems. It is possible for entropy of one system to decrease. True or False?

6. Which of the following is an example of reversible process?

7. Consider a gas contained in a rigid container of volume 20m³. What will be the change in internal energy if 50J of heat is provided to it? Assume the gas exerts a pressure of 1atm on the walls.

8. A disc spinning with 24J of kinetic energy is kept in a container containing a fluid having a heat capacity of 2000J/K. When the disc comes to rest what will be the change in internal energy if ΔU = 3.5ΔT.

9. How many degrees of freedom are there in a diatomic gas?

10. In an isothermal process for an ideal gas, change in internal energy is zero. True or False?