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A refrigerator consumes an average $35\, {W}$ power to operate between temperature $-10^{\circ} {C}$ to $25^{\circ} {C}$. If there is no loss of energy then how much average heat per second does it transfer? (in ${J} / {s}$)
The adjoining figure shows the $P-V$ diagram for a fixed mass of an ideal gas undergoing cyclic process. $AB$ represents isothermal process and $CA$ represents isochoric process.Which of the graph shown in the following figures represents the $P-T$ diagram of the cyclic process ?
An engineer claims to have made an engine delivering $10 kW$ power with fuel consumption of $1\,g\,{s^{ - 1}}$. The calorific value of fuel is $2k cal/g$. His claim
The figure shows a process $AB$ undergone by $2$ moles of an ideal diatomic gas. The process $AB$ is in such a way that $VT =$ constant. $T_1 = 300 K $and $T_2 = 500 K$ ( $R = $ gas constant)
Consider a spherical shell of radius $R$ at temperature $T$. The black body radiation inside it can be considered as an ideal gas of photons with internal energy per unit volume$E=$ $\frac{U}{V} \propto {T^4}$ and pressure $P = \frac{1}{3}\left( {\frac{U}{V}} \right)$ If the shell now undergoes an adiabatic expansion the relation between $T$ and $R$ is
A thermodynamic system is taken from an original state $A$ to an intermediate state $B$ by a linear process as shown in the figure. It's volume is then reduced to the original value from $B$ to $C$ by an isobaric process. The total work done by the gas from $A$ to $B$ and $B$ to $C$ would be :