Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoDifferent processesMedium2 minQB

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Two moles of helium gas are taken along the path $A BC D$ (as shown in diagram). The work done by the gas is

Source diagram

Answer:

Solution:

$A B$ is isobaric: $W_{A B} = n R Δ T$ .

$W_{A B} = 2 R (750 - 250) = 1000 R$

$BC$ is isochoric: $W_{BC} = 0$ .

$C D$ is isothermal at $1000 K$ .

$W_{C D} = 2 R (1000) ln \frac{20}{15}$

$W = 2000 R (\frac{1}{2} + ln \frac{4}{3})$

Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:Different processes

⏱ 2mℹ️ Source: QB

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