State the main points of the second law of thermodynamics.
(N/A) The second law of thermodynamics can be stated through two primary perspectives:
$1$. Kelvin-Planck Statement: It is impossible for any device that operates on a thermodynamic cycle to receive heat from a single reservoir and produce a net amount of work. In other words,$100\%$ conversion of heat into work is impossible.
$2$. Clausius Statement: It is impossible to construct a device that operates in a cycle and produces no effect other than the transfer of heat from a lower-temperature body to a higher-temperature body without the application of external work.
$1$. Kelvin-Planck Statement: It is impossible for any device that operates on a thermodynamic cycle to receive heat from a single reservoir and produce a net amount of work. In other words,$100\%$ conversion of heat into work is impossible.
$2$. Clausius Statement: It is impossible to construct a device that operates in a cycle and produces no effect other than the transfer of heat from a lower-temperature body to a higher-temperature body without the application of external work.
Explore More
Similar Questions
The entropy of a thermodynamic system does not change when this system is used for:
Why can't the efficiency of a heat engine ever be $100 \%$?
Medium
View SolutionThe graphs below show the entropy versus energy $U$ of two systems $1$ and $2$ at constant volume. The initial energies of the systems are indicated by $U_{1, i}$ and $U_{2, i}$,respectively. The graphs are drawn to the same scale. The systems are then brought into thermal contact with each other. Assume that,at all times,the combined energy of the two systems remains constant. Choose the most appropriate option indicating the energies of the two systems and the total entropy after they achieve equilibrium.
An ideal gas in a cylinder is separated by a piston in such a way that the entropy of one part is $S_{1}$ and that of the other part is $S_{2}$. Given that $S_{1} > S_{2}$. If the piston is removed,then the total entropy of the system will be:
On a hot day,a cup full of ice water placed on a table heats up,while a cup of hot tea on the same table cools down. Explain the reason.
Medium
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo