In P-V diagram shown, gas does 5,J of work in isothermal process ab and 4,J in adiabatic process bc

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11.Thermodynamics

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

A

$9$

B

$1$

C

$4$

D

$5$

Solution

For isothermal : $\Delta U=0$

For adiabatic : $\Delta U=-\Delta W$

Standard 11

Physics

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