Thermal Physics MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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The energy possessed by an object due to its temperature is called:
A. Internal energy
B. Kinetic energy
C. Potential energy
D. Thermal energy
Answer: Thermal energy
The transfer of heat by direct molecular contact is known as:
A. Conduction
B. Convection
C. Radiation
D. Phase change
Answer: Conduction
Which process involves heat transfer without any change in temperature?
A. Phase transition
B. Adiabatic process
C. Isothermal process
D. Isobaric process
Answer: Phase transition
Which law states that energy cannot be created or destroyed?
A. First law of thermodynamics
B. Second law of thermodynamics
C. Law of conservation of mass
D. Third law of thermodynamics
Answer: First law of thermodynamics
What is the temperature at which water boils in Kelvin?
A. 100 K
B. 373 K
C. 273 K
D. 0 K
Answer: 373 K
Which of the following is true in an isochoric process?
A. The volume remains constant
B. The pressure remains constant
C. The temperature remains constant
D. The internal energy remains constant
Answer: The volume remains constant
Which of the following best explains entropy?
A. A measure of disorder or randomness
B. The ability of a system to do work
C. The total amount of heat in a system
D. The transfer of energy in a system
Answer: A measure of disorder or randomness
The internal energy of an ideal gas is related to:
A. Its temperature
B. Its volume
C. Its pressure
D. Its specific heat capacity
Answer: Its temperature
Which of the following correctly describes radiation?
A. The transfer of heat by electromagnetic waves
B. The transfer of heat through a fluid
C. The transfer of heat through solids
D. The transfer of heat without a medium
Answer: The transfer of heat by electromagnetic waves