The second law of thermodynamics deals with conversion of heat into work and direction of
Correct answer: A. Flow of heat.
- A. Flow of heat.
- B. Applied force.
- C. Applied pressure.
- D. Flow of internal energy.
Explanation
The second law of thermodynamics is fundamentally about the direction of processes. It states that heat flows spontaneously from a hotter to a cooler body and not in the opposite direction, which is why Option A (flow of heat) is correct. This law is crucial in understanding why certain processes occur naturally and why they require input to occur in reverse. Options B, C, and D are incorrect as they refer to concepts that are not central to the second law. Applied force and applied pressure (Options B and C) are related to mechanical aspects rather than thermodynamic directionality. The flow of internal energy (Option D), while a thermodynamic concept, is not the core focus of the second law, which is concerned with the direction of heat flow.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Thermal Equilibrium and Heat
Thermal equilibrium means that bodies in contact have the same temperature and no net heat flows between them. The topic distinguishes heat from temperature, uses the zeroth law of thermodynamics, and covers heat transfer, specific heat capacity, thermal expansion and the conditions for reaching equilibrium.
Practise Thermodynamics
714 free Thermodynamics MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Thermal Equilibrium and Heat questions
By reducing the absolute temperature of a black body to half, the total energy radiated will be:
Heat given to a body, which raises its temperature by 1°C is -------------
Robin wanted to shove a rubber pipe up a plastic tap. The problem is that the pipe's diameter is smaller than that required to secure a tight fit. So, Robin switched on a hair dryer and pointed it towards the pipe. He found that now the pipe fitted in easily. Why is this so?
When an ideal gas is cooled at constant volume until the pressure becomes half of the originalpressure, then the average translational kinetic energy of the gas molecules
All Carnot engines have zero efficiency if they are operating between two bodies with
In a thermodynamic system, if there is no change in temperature and internal energy, then the process is called an