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State Clausius form of the second law of thermodynamics.

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प्रश्न

State Clausius form of the second law of thermodynamics.

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उत्तर

“Heat always flows from hotter object to colder object spontaneously”. This is known as the Clausius form of the second law of thermodynamics.

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अध्याय 8: Heat and Thermodynamics - Evaluation [पृष्ठ १५९]

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सामाचीर कलवी Physics - Volume 1 and 2 [English] Class 11 TN Board
अध्याय 8 Heat and Thermodynamics
Evaluation | Q II. 41. | पृष्ठ १५९

संबंधित प्रश्न

Draw a p-V diagram and explain the concept of positive and negative work. Give one example each.


Define heat engine.


State the second law of thermodynamics in terms of entropy.


Derive the expression for Carnot engine efficiency.


Explain the second law of thermodynamics in terms of entropy.


Suppose a person wants to increase the efficiency of the reversible heat engine that is operating between 100°C and 300°C. He had two ways to increase efficiency.

  1. By decreasing the cold reservoir temperature from 100°C to 50°C and keeping the hot reservoir temperature constant
  2. by increasing the temperature of the hot reservoir from 300°C to 350°C by keeping the cold reservoir temperature constant.

Which is the suitable method?


A Carnot engine whose efficiency is 45% takes heat from a source maintained at a temperature of 327°C. To have an engine of efficiency of 60% what must be the intake temperature for the same exhaust (sink) temperature?


10 One mole of a van der Waals' gas obeying the equation `("P" + "a"/"V"^2)`(V - b) = RT undergoes the quasi-static cyclic process which is shown in the P-V diagram. The net heat absorbed by the gas in this process is ______

 


Let η1 is the efficiency of an engine at T1 = 447°C and T2 = 147°C while η2, is the efficiency at T1 = 947°C and T2 = 47°C. The ratio `eta_1/eta_2` will be ______.


The thermal efficiency of a heat engine is 25%. If in one cycle the heat absorbed from the hot reservoir is 50000 J, what is the heat rejected to the cold reservoir in one cycle?


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