Thermodynamics is the branch of physics that deals with the relationship between heat, work and internal energy of a system.
It explains how heat energy is converted into work and how energy is transferred between systems.
A thermodynamic system is a part of the universe chosen for study, where energy changes are observed.
Everything outside the thermodynamic system is called the surroundings.
Any change in the state of a system due to transfer of heat or work is called a thermodynamic process.
Q1. Thermodynamics deals with: A) Motion only B) Electricity only C) Heat, work and energy D) Light only Answer: C Q2. A thermodynamic system is: A) Whole universe B) A selected part of universe C) Only solid bodies D) Only gases Answer: B Q3. Everything outside the system is called: A) Environment B) Atmosphere C) Surroundings D) Boundary Answer: C Q4. Change in state of a system is called: A) Motion B) Expansion C) Thermodynamic process D) Heat transfer Answer: C Q5. Which of the following is an application of thermodynamics? A) Electric motor B) Steam engine C) Transformer D) Generator Answer: B
Study of heat, work and internal energy.
Part of universe chosen for study.
Everything outside the system.
Change in state due to heat or work.
Direct MCQs are asked on definitions of system, surroundings and thermodynamics.
