Teaching RPSC School Lecturer Mock Test Series 2024 Physics Thermodynamics First law of thermodynamics
When unit mass of water boils to become steam at 100°C, it absorbs Q amount of heat. The densities of water and steam at 100°C are ρ1 and ρ2 respectively and the atmospheric pressure is p0. The increase in the internal energy of the water is
1
Q
2
\(Q+p_0\left(\frac{1}{\rho_1}-\frac{1}{\rho_2}\right)\)
3
\(\mathrm{Q}+p_0\left(\frac{1}{\rho_2}-\frac{1}{\rho_1}\right)\)
4
\(\mathrm{Q}-p_0\left(\frac{1}{\rho_1}+\frac{1}{\rho_2}\right)\)
5
Question Not Attempted