AP EAMCET2005PhysicsThermodynamics
The ratio of specific heats of a gas is . The change in internal energy of one mole of the gas, when the volume changes from V to 2 V at constant pressure p is
Options
- A-1 p V
- Bp V
- Cp V -1
- Dp V
Correct answer
C. p V -1
Step-by-step solution
Change in internal energy, d U=d Q-d W At constant pressure, aligned d U & =C_p d T-p d V & =C_p d T-R d T & = (C_p-R ) d T=C_V d T & = R -1 d T & = R -1 p V R & = p V -1 aligned