Thermal Physics MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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The concept that describes the total energy contained within a system, including internal, kinetic, and potential energy, is known as:
A. Internal energy
B. Kinetic energy
C. Potential energy
D. Thermal energy
Answer: Internal energy
The principle stating that a perfect gas obeys the ideal gas law is associated with which law?
A. Ideal gas law
B. Boyle's law
C. Charles' law
D. Dalton's law
Answer: Ideal gas law
The energy required to change the temperature of a substance depends on its:
A. Heat capacity
B. Latent heat
C. Thermal conductivity
D. Specific heat capacity
Answer: Heat capacity
The process by which heat is transferred through fluids (liquids or gases) due to the movement of the fluid is called:
A. Convection
B. Conduction
C. Radiation
D. Advection
Answer: Convection
The amount of heat required to convert a liquid into a gas is known as:
A. Latent heat of vaporization
B. Latent heat of fusion
C. Specific heat
D. Thermal energy
Answer: Latent heat of vaporization
The principle stating that heat will flow from a hotter object to a colder one until thermal equilibrium is reached is described by:
A. Zeroth law of thermodynamics
B. First law of thermodynamics
C. Second law of thermodynamics
D. Third law of thermodynamics
Answer: Zeroth law of thermodynamics
The energy required to raise the temperature of 1 gram of a substance by 1°C is called:
A. Specific heat capacity
B. Latent heat
C. Heat capacity
D. Thermal energy
Answer: Specific heat capacity
The principle stating that the entropy of an isolated system always increases over time is associated with:
A. Second law of thermodynamics
B. First law of thermodynamics
C. Third law of thermodynamics
D. Zeroth law of thermodynamics
Answer: Second law of thermodynamics
The measure of the average kinetic energy of molecules in a substance is reflected in its:
A. Temperature
B. Pressure
C. Volume
D. Density
Answer: Temperature