A) \[25min\]
B) \[\frac{\omega M}{M+m}\]
C) \[\frac{\omega (M-2M)}{M+2m}\]
D) \[\frac{\omega (M+2M)}{M}\]
Correct Answer: B
Solution :
Heat at constant pressure \[{{Q}_{p}}=m{{c}_{p}}\Delta \theta \] Heat at constant volume \[{{Q}_{V}}=m{{c}_{V}}\Delta \theta \] \[{{Q}_{p}}-{{Q}_{V}}=M({{C}_{P}}-{{C}_{V}})\Delta \theta \] \[70-{{Q}_{V}}=mR\Delta \theta \] \[70-{{Q}_{V}}=2\times 2(35-30)\] \[70-{{Q}_{V}}=20\] \[{{Q}_{V}}=70-20=50cal\]You need to login to perform this action.
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