In the P - V diagram shown, the gas does 5 J of work in isothermal process ab and 4 J in adiabatic process bc. What will be the change in internal energy of the gas in straight path c to a?

Question

In the P - V diagram shown, the gas does 5 J of work in isothermal process ab and 4 J in adiabatic process bc. What will be the change in internal energy of the gas in straight path c to a? (A) 9 J (B) 1 J (C) 4 J (D) 5 J

Tardigrade Admin · Accepted Answer

For isothermal: Δ U =0 For adiabatic: Δ U =-Δ W

Q. In the $P - V$ diagram shown, the gas does $5 J$ of work in isothermal process $ab$ and $4 J$ in adiabatic process $b c$ . What will be the change in internal energy of the gas in straight path $c$ to $a$ ?

9 J

1 J

4 J

5 J

For isothermal : $Δ U = 0$
For adiabatic : $Δ U = - Δ W$

Q. In the P−V diagram shown, the gas does 5J of work in isothermal process ab and 4J in adiabatic process bc. What will be the change in internal energy of the gas in straight path c to a?

9 J

1 J

4 J

5 J

For isothermal : ΔU=0 For adiabatic : ΔU=−ΔW

Q. In the $P - V$ diagram shown, the gas does $5 J$ of work in isothermal process $ab$ and $4 J$ in adiabatic process $b c$ . What will be the change in internal energy of the gas in straight path $c$ to $a$ ?

For isothermal : $Δ U = 0$
For adiabatic : $Δ U = - Δ W$