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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoKinetic Theory of Gases and Gas LawsMedium2 minQB

PhysicsMediummultiple choice

During an experiment an ideal gas is found to obey the condition $\frac{P ^{2}}{ρ} = constant$ ( $ρ$ = density of the gas). The gas is initially at temperature $T$ , pressure $P$ and density $ρ$ . The gas expands such that the density changes to $\frac{ρ}{2}$ :

Options:(select one or more)

Answer:

B, D

Solution:

$P^{2} \propto ρ$ , so $P \to \frac{P}{2}$ (A

is wrong). $T \propto \frac{P}{ρ}$ gives

$T \to \frac{\frac{1}{2}}{\frac{1}{2}} T = 2 T$ (B).

Since $ρ \propto \frac{P}{T}$ , the condition gives

$PT = constant$ , a hyperbola (D). B and D.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Kinetic Theory of Gases and Gas Laws

⏱ 2mℹ️ Source: QB

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