Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoDifferent processesEasy2 minPYQ_2022

PhysicsEasynumerical

A diatomic gas $(γ = 1.4)$ does $400 J$ of work when it is expanded isobarically. The heat given to the gas in the process is _____ $J$ .

Answer:

1400.00

Solution:

For isobaric process: $W = n R Δ T$ $\Rightarrow 400 = n R Δ T$

Also: $Q = n C_{p} Δ T$

$\Rightarrow Q = n (\frac{7 R}{2}) Δ T$ ( $C_{p} = \frac{7 R}{2}$ , for diatomic gas)

$Q = \frac{7}{2} \times 400 = 1400 J$

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

⏱ 2mℹ️ Source: PYQ_2022

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