Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoFirst lawEasy2 minPYQ_2019

PhysicsEasysingle choice

Following figure shows two processes $A$ and $B$ for a gas. If $∆ Q_{A}$ and $∆ Q_{B}$ are the amount of heat absorbed by the system in two cases, and $∆ U_{A}$ and $∆ U_{B}$ are changes in internal energies, respectively, then:

Options:

Answer:

Solution:

$\Rightarrow ∆ U_{A} = ∆ U_{B}$ as change in internal energy depends on initial and final state and not the path.
$\Rightarrow$ By comparing area under the curve,
$W_{_{A}} > W_{_{B}}$
From $Q = U + W$
We can say, $Q_{P_{A}} > Q_{P_{B}}$

Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:First law

⏱ 2mℹ️ Source: PYQ_2019

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