A) 5 : 3
B) 3 : 5
C) 1:1
D) 7 : 5
Correct Answer: D
Solution :
At constant pressure, change in internal energy for unit change in temperature \[{{U}_{1}}={{C}_{P}}\] At constant volume \[{{U}_{2}}={{C}_{V}}\] \[\therefore \] \[\frac{{{U}_{1}}}{{{U}_{2}}}=\frac{{{C}_{P}}}{{{C}_{V}}}=\gamma \] For diatomic gas \[\gamma =1.4\] \[\frac{{{U}_{1}}}{{{U}_{2}}}=1.4\] \[\Rightarrow \] \[\frac{{{U}_{1}}}{{{U}_{2}}}=\frac{7}{5}\]You need to login to perform this action.
You will be redirected in
3 sec