Thermal Physics MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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The concept of ‘thermal equilibrium’ is described by which law of thermodynamics?
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 principle stating that the temperature of a gas is directly proportional to its volume at constant pressure is known as:
A. Charles' law
B. Boyle's law
C. Dalton's law
D. Avogadro's law
Answer: Charles' law
What is the heat required to raise the temperature of 1 gram of water by 1°C called?
A. Calorie
B. Joule
C. Watt
D. Kelvin
Answer: Calorie
What is the principle behind a heat engine?
A. Converting heat energy into mechanical work
B. Transferring heat from cold to hot reservoirs
C. Maintaining constant temperature
D. Preventing heat flow
Answer: Converting heat energy into mechanical work
The principle stating that the volume of a gas is inversely proportional to its pressure at constant temperature is known as:
A. Boyle's law
B. Charles' law
C. Gay-Lussac's law
D. Avogadro's law
Answer: Boyle's law
The principle stating that the volume of a gas increases with increasing temperature at constant pressure is known as:
A. Charles' law
B. Boyle's law
C. Gay-Lussac's law
D. Avogadro's law
Answer: Charles' law
The energy associated with the motion of an object is known as:
A. Kinetic energy
B. Potential energy
C. Thermal energy
D. Mechanical energy
Answer: Kinetic energy
The heat required to change a unit mass of a substance by 1°C is its:
A. Specific heat capacity
B. Heat capacity
C. Latent heat
D. Thermal conductivity
Answer: Specific heat capacity
The amount of heat required to change a substance from a solid to a liquid is called:
A. Latent heat of fusion
B. Latent heat of vaporization
C. Specific heat capacity
D. Thermal energy
Answer: Latent heat of fusion