5 Questions
The first law of thermodynamics is based on:
Law of conservation of energy
If the initial internal energy of a gas was 30 joules and it releases 20 joules of heat while 8 joules of work is done on it, then the final internal energy will be:
18 J
In a process where 500 calories of heat is given to a system and 100 joules of work is done on the system, the increase in the internal energy of the system is:
82 calories
When a system is taken from state 'a' to state 'b' along the path 'acb', 200 J of heat is absorbed and 80 J of work is done by it. Along the path 'adb', the quantity of heat absorbed is:
120 J
The first law of thermodynamics is a restatement of the:
Conservation of energy principle
Study Notes
First Law of Thermodynamics
- The first law of thermodynamics is based on the conservation of energy.
- If the initial internal energy of a gas is 30 joules, and it releases 20 joules of heat while 8 joules of work is done on it, the final internal energy will be 30 - 20 + 8 = 18 joules.
- In a process where 500 calories of heat is given to a system and 100 joules of work is done on the system, the increase in the internal energy of the system is 500 cal + 100 J = 690 J (since 1 cal = 4.184 J).
- When a system is taken from state 'a' to state 'b' along the path 'acb', 200 J of heat is absorbed and 80 J of work is done by it.
- The first law of thermodynamics is a restatement of the law of conservation of energy.
Test your knowledge of thermodynamics and kinetic theory of gases with this quiz, which includes questions related to the first law of thermodynamics, conservation of energy, heat transfer, and work done on a system. Challenge yourself with this DPP-01 quiz from YAKEEN-202
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