One mole of an ideal diatomic gas undergoes a transition from A to B along a path

One mole of an ideal diatomic gas undergoes a transition from A to B along a path AB as shown in the figure.

One Mole Of An Ideal Diatomic Gas Undergoes A Transition From A To B Along A Path Ab As Shown In The Figure. Q 76

The change in internal energy of the gas during the transition is

(a) -20 kJ
(b) 20 J
(c) -12 kJ
(d) 20 kJ

-20 kJ

No explanation available. Be the first to write the explanation for this question by commenting below.

admin:

Aditi Singh says:

December 13, 2018 at 10:30 am

ΔU = nCΔT
Also, T = PV/nR
Now,
ΔT = T-T => [PV - PV] / nR
ΔU = nR/¥-1 {PV- PV / nR} [here, ¥ = gamma]
(nR will be cancelled out)
We get,
{-8 x 10^3} / {2/5} = -20kJ.

Hope it helps :)