When heat energy of $1500\; Joules$, is supplied to a gas at constant pressure $2.1 \times {10^5}\;N/{m^2}$, there was an increase in its volume equal to $2.5 \times {10^{ - 3}}\;{m^3}$. The increase in internal energy of the gas in Joules is ...... $J$
A$450$
B$525$
C$975$
D$2025$
Medium
Download our app for free and get started
C$975$
c (c) According to FLOT
$\Delta Q = \Delta U + P(\Delta V)$==> $\Delta U = \Delta Q - P(\Delta V)$
$ = 1500 - (2.1 \times {10^5})(2.5 \times {10^{ - 3}})$$=975 \,Joule$
Download our app
and get started for free
Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*
Suppose that two heat engines are connected in series, such that the heat exhaust of the first engine is used as the heat input of the second engine as shown in figure. The efficiencies of the engines are $\eta_1$ and $\eta_2$, respectively. The net efficiency of the combination is given by
A thermo-dynamical system is changed from state $({P_1},\,{V_1})$ to $({P_2},\,{V_2})$ by two different process. The quantity which will remain same will be
One mole of a diatomic ideal gas undergoes a cyclic process $ABC$ as shown in figure. The process $BC$ is adiabatic. The temperatures at $A, B$ and $C$ are $400\ K, 800\ K $ and $600\ K$ respectively. Choose the correct statement
Two samples $A$ and $B$ of a gas initially at the same pressure and temperature are compressed from volume $ V$ to $ V/2$ ($A$ isothermally and adiabatically). The final pressure of $ A$ is
When $1\, kg$ of ice at $0^o C$ melts to water at $0^o C,$ the resulting change in its entropy, taking latent heat of ice to be $80\, cal/gm,$ is ...... $cal/K$