List of top Physics Questions on carnot cycle

If the absolute temperature of the source of a Carnot's engine is changed from $T_1$ to $T_2$, its efficiency increases from $0.25$ to $0.4$. If the temperature of the sink is constant, then the ratio of $T_1$ and $T_2$ is:
A Carnot engine uses diatomic gas as a working substance. During the adiabatic expansion part of the cycle, if the volume of the gas becomes 32 times its initial volume, then the efficiency of the engine is
The efficiency of a Carnot engine is \(50\%\) and the temperature of the sink is \(500\,\text{K}\). Keeping the source temperature constant, the required sink temperature to raise the efficiency of the engine to \(60\%\) is
The efficiency of a Carnot engine working between temperatures $127^\circ\text{C}$ and $27^\circ\text{C}$ is}
A Carnot engine operates between a heat source at $T_1 = 600\text{ K}$ and a sink at $T_2 = 300\text{ K}$. If the engine absorbs $1000\text{ J}$ of heat from the source per cycle, the work done per cycle is:
A refrigerator has a coefficient of performance of 5. If the temperature inside the freezer is $-20^{\circ}C$, the temperature of the surroundings to which it rejects heat is:
In an isothermal expansion of an ideal gas, the heat supplied to the gas is:
A Carnot engine operates between temperatures T₁ and T₂ (T₁ > T₂). If T₁ is increased by ∆T and T₂ is decreased by ∆T, its efficiency will:
An ideal gas undergoes a cyclic process ABCA wherein AB is an isothermal expansion, BC is an isochoric pressure drop, and CA is an adiabatic compression. The work done by the gas in the complete cycle is:
An ideal gas heat engine operates in a Carnot cycle between \(227^\circ\text{C}\) and \(127^\circ\text{C}\). It absorbs \(6 \times 10^4 \text{ cal}\) of heat at the higher temperature. The amount of heat converted into work is:
If the temperature of the source in a Carnot engine is increased while the sink temperature remains constant, the efficiency will:
If the temperature of a hot reservoir is 600K and the cold reservoir is 300K, the efficiency of the Carnot engine is:
A Carnot engine works between \(600\,\text{K}\) and \(300\,\text{K}\). Find its efficiency.
A Carnot engine has efficiency \( \frac{1}{3} \). It becomes \( \frac{1}{3} \), when the temperature of sink is lowered by 57 K. The temperature of the source is
The relation between efficiency ((\eta)) of Carnot engine and coefficient of performance ((\beta)) of refrigerator is
The relation between efficiency ((\eta)) of Carnot engine and coefficient of performance ((\beta)) of refrigerator is
Efficiency of a Carnot engine
The relation between efficiency ((\eta)) of Carnot engine and coefficient of performance ((\beta)) of refrigerator is
If the heat supplied to an ideal gas is used up entirely to do work on the surrounding, then the process is called
A Carnot engine operates between temperatures of $ 600 \, \text{K} $ and $ 300 \, \text{K} $. If it absorbs $ 900 \, \text{J} $ of heat from the source, how much work does it perform?
For which of the following combinations of working temperatures, the efficiency of Carnot's engine is maximum?
An ideal refrigerator has freezer at a temperature of $-13^{\circ}\text{C}$. The coefficient of performance of the engine is $5$. The temperature of the air (to which heat is rejected) is
A Carnot engine operating between two reservoirs has efficiency \(\frac{1}{3}\) When the temperature of cold reservoir raised by \(x\), its efficiency decreases to \(\frac{1}{6}\) The value of \(x\), if the temperature of hot reservoir is \(99^{\circ} C\), will be :
A Carnot engine operating between temperatures \(600\,K\) and \(300\,K\), absorbs \(800\,J\) of heat from the source. The mechanical work done per cycle is
The temperature of the sink of a Carnot engine is \(250\;K\). In order to increase the efficiency of the Carnot engine from \(25\%\) to \(50\%\), the temperature of the source should be increased by