NEET Test Series from KOTA - 10 Papers In MS WORD
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PHXI12:THERMODYNAMICS
371376
A Carnot engine working between \(200\,K\) and \(500\,K\) has a work output of \(900\,J\) per cycle. The amount of heat energy supplied to the engine from the source in each cycle is
371377
An ideal gas undergoes a reversible isothermal expansion from a state \(i\) to \(f\). The change in entropy \(\Delta S(i \rightarrow f)\)
1 \(>0\)
2 0
3 Not defined for the process
4 \( < 0\)
Explanation:
\(\Delta S=\dfrac{\Delta Q}{T}\) In isothermal expansion \(T\) is constant and \(\Delta Q\) is \((+) v e\) since the gas absorbs heat so \(\Delta S=\dfrac{\Delta Q}{T}>0\)
PHXI12:THERMODYNAMICS
371378
A sink, that is the system where heat is rejected, is essential for the conversion of heat into work. From which law the above inference follows?
1 Zeroth
2 First
3 Second
4 Third
Explanation:
Conceptual Question
PHXI12:THERMODYNAMICS
371379
A Carnot engine takes \(5000\,k\,cal\) of heat from a reservior at \(727^\circ C\) and gives heat to a sink at \(127^\circ C\). The work done by the engine is:
371376
A Carnot engine working between \(200\,K\) and \(500\,K\) has a work output of \(900\,J\) per cycle. The amount of heat energy supplied to the engine from the source in each cycle is
371377
An ideal gas undergoes a reversible isothermal expansion from a state \(i\) to \(f\). The change in entropy \(\Delta S(i \rightarrow f)\)
1 \(>0\)
2 0
3 Not defined for the process
4 \( < 0\)
Explanation:
\(\Delta S=\dfrac{\Delta Q}{T}\) In isothermal expansion \(T\) is constant and \(\Delta Q\) is \((+) v e\) since the gas absorbs heat so \(\Delta S=\dfrac{\Delta Q}{T}>0\)
PHXI12:THERMODYNAMICS
371378
A sink, that is the system where heat is rejected, is essential for the conversion of heat into work. From which law the above inference follows?
1 Zeroth
2 First
3 Second
4 Third
Explanation:
Conceptual Question
PHXI12:THERMODYNAMICS
371379
A Carnot engine takes \(5000\,k\,cal\) of heat from a reservior at \(727^\circ C\) and gives heat to a sink at \(127^\circ C\). The work done by the engine is:
371376
A Carnot engine working between \(200\,K\) and \(500\,K\) has a work output of \(900\,J\) per cycle. The amount of heat energy supplied to the engine from the source in each cycle is
371377
An ideal gas undergoes a reversible isothermal expansion from a state \(i\) to \(f\). The change in entropy \(\Delta S(i \rightarrow f)\)
1 \(>0\)
2 0
3 Not defined for the process
4 \( < 0\)
Explanation:
\(\Delta S=\dfrac{\Delta Q}{T}\) In isothermal expansion \(T\) is constant and \(\Delta Q\) is \((+) v e\) since the gas absorbs heat so \(\Delta S=\dfrac{\Delta Q}{T}>0\)
PHXI12:THERMODYNAMICS
371378
A sink, that is the system where heat is rejected, is essential for the conversion of heat into work. From which law the above inference follows?
1 Zeroth
2 First
3 Second
4 Third
Explanation:
Conceptual Question
PHXI12:THERMODYNAMICS
371379
A Carnot engine takes \(5000\,k\,cal\) of heat from a reservior at \(727^\circ C\) and gives heat to a sink at \(127^\circ C\). The work done by the engine is:
371376
A Carnot engine working between \(200\,K\) and \(500\,K\) has a work output of \(900\,J\) per cycle. The amount of heat energy supplied to the engine from the source in each cycle is
371377
An ideal gas undergoes a reversible isothermal expansion from a state \(i\) to \(f\). The change in entropy \(\Delta S(i \rightarrow f)\)
1 \(>0\)
2 0
3 Not defined for the process
4 \( < 0\)
Explanation:
\(\Delta S=\dfrac{\Delta Q}{T}\) In isothermal expansion \(T\) is constant and \(\Delta Q\) is \((+) v e\) since the gas absorbs heat so \(\Delta S=\dfrac{\Delta Q}{T}>0\)
PHXI12:THERMODYNAMICS
371378
A sink, that is the system where heat is rejected, is essential for the conversion of heat into work. From which law the above inference follows?
1 Zeroth
2 First
3 Second
4 Third
Explanation:
Conceptual Question
PHXI12:THERMODYNAMICS
371379
A Carnot engine takes \(5000\,k\,cal\) of heat from a reservior at \(727^\circ C\) and gives heat to a sink at \(127^\circ C\). The work done by the engine is: