Thermodynamics ...

Three bodies $$A$$, $$B$$ and $$C$$ are in thermal equilibrium. The temperature of $$B$$ is $${45}^{o}C$$, then the temperature of $$C$$ is ____________

Which of the following is correct for any thermodynamic system?

Which is not true for Second Law of Thermodynamics?

The molar heat capacity in a process of diatomic gas if it does a work of $$\dfrac{Q}{4}$$ when a heat of Q is supplied to it is

A carnot cycle is having maximum efficiency because

In a cyclic heat engine operating between a source temperature of $$600^0C$$ and a sink temperature of $$20^0 C$$, the least rate of heat rejection per kW net output of the engine is,

A series combination of two Carnots engines operate between the temperatures of $$180^0C$$ and $$20^0C$$. If the engines produce equal amount of work,then what is the intermediate temperature(In $$^0C$$)?

A reversible engine operates between temperatures 900 K & $$T_2$$($$T_2$$ < 900 K), & another reversible engine between $$T_2$$ & 400 K ($$T_2$$ > 400 K) in series. What is the value of $$T_2$$ if work outputs of both the engines are equal?

An engine working on Carnot cycle rejects 40% of absorbed heat from the source, while the sink temperature is maintained at $$27^0C$$, then what is the source temperature (in $$^0C$$)?

One reversible heat engine operates between 1600 K and $$T_2$$ K, and another reversible heat engine operates between $$T_2$$ K and 400 K. If both the engines have the same heat input and output, then the temperature $$T_2$$ must be equal to: