Thermal Physics MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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The principle stating that the entropy of a system tends to increase over time is a statement of:
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 process in which a gas turns into a solid without passing through the liquid phase is known as:
A. Deposition
B. Sublimation
C. Condensation
D. Evaporation
Answer: Deposition
The process of heat transfer that occurs due to the movement of fluids is:
A. Convection
B. Conduction
C. Radiation
D. Advection
Answer: Convection
The energy required to change the temperature of a substance without changing its phase is called:
A. Heat capacity
B. Latent heat
C. Specific heat capacity
D. Thermal conductivity
Answer: Specific heat capacity
The term used to describe the heat capacity of a substance per unit mass is:
A. Specific heat capacity
B. Latent heat
C. Heat capacity
D. Thermal conductivity
Answer: Specific heat capacity
The amount of heat energy transferred through a material depends on its:
A. Thermal conductivity
B. Specific heat capacity
C. Latent heat
D. Density
Answer: Thermal conductivity
The concept of ‘thermal equilibrium’ is best described by:
A. Heat transfer ceases when temperatures are equal
B. Energy is conserved in the system
C. Pressure remains constant
D. Volume remains unchanged
Answer: Heat transfer ceases when temperatures are equal
The heat required to change a solid to a liquid is called:
A. Latent heat of fusion
B. Latent heat of vaporization
C. Specific heat
D. Thermal energy
Answer: Latent heat of fusion
The energy transferred by radiation is due to:
A. Electromagnetic waves
B. Particle collisions
C. Fluid movement
D. Heat conduction
Answer: Electromagnetic waves