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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermodynamicsMedium2 minQB

PhysicsMediumsingle choice

An ideal gas is taken through a cycle A $\to$ B $\to$ C $\to$ A as shown in figure. If the heat supplied in the cycle is 5 J, then the work done by the gas in the process C $\to$ A is

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Answer:

Solution:

Cyclic process: $Δ U = 0$ , so $\sum (Δ Q) = \sum (Δ W)$ .

$W_{A B} = P Δ V = 20 \times (2 - 1) = 20$ J (isobaric); $W_{BC} = 0$ (isochoric).

$5 = 20 + W_{C A} \Rightarrow W_{C A} = - 15$ J.

Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:Thermodynamics

⏱ 2mℹ️ Source: QB

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