Thermodynamics is the branch of physics that deals with the relationships between heat, work, temperature, and energy. It explores how energy is transferred and transformed in various systems, providing critical insights into the fundamental laws governing these interactions. The study of thermodynamics is essential in various fields, including engineering, chemistry, and environmental science, as it helps to understand and predict the behavior of physical systems in equilibrium and those undergoing change. This category will cover various topics such as the laws of thermodynamics, engines, heat engines, and entropy, among others.
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[q] What is the first law of thermodynamics?
A) Energy can be created and destroyed
B) Energy can only be transformed
C) Energy is always constant
D) Energy can only be transferred
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[a] Energy can only be transformed [q] What is the formula for calculating work done in thermodynamics?
A) W = F x d
B) W = P x V
C) W = mgh
D) W = Q – U [a] W = P x V [q] In which process does the system do work at constant pressure?
A) Isothermal process
B) Isochoric process
C) Isobaric process
D) Adiabatic process [a] Isobaric process [q] What is the unit of heat energy in the SI system?
A) Joule
B) Calorie
C) Newton
D) Watt [a] Joule [q] What is the second law of thermodynamics primarily concerned with?
A) Conservation of energy
B) Entropy and disorder
C) Chemical reactions
D) Mechanical work [a] {answer_51]} [q] What type of process occurs without heat transfer?
A) Isothermal
B) Isobaric
C) Adiabatic
D) Isochoric [a] Adiabatic [q] What is the Carnot efficiency formula?
A) 1 – (T2/T1)
B) T1/T2
C) T2/T1
D) 1 + (T1/T2) [a] 1 – (T2/T1) [q] Which of the following is a state function?
A) Work
B) Heat
C) Internal Energy
D) Power [a] Internal Energy [q] In thermodynamics, what does ‘Q’ typically represent?
A) Work done
B) Total energy
C) Heat transfer
D) Entropy [a] Heat transfer [q] What is the significance of the zeroth law of thermodynamics?
A) It defines temperature
B) It describes energy conservation
C) It establishes thermodynamic equilibrium
D) It explains heat transfer [a] It defines temperature [x]Click here to explore more flashcards: Physics Flashcards [restart] [/qdeck]
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