Start Free Mock LoginAlready registered? Login here

Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermodynamicsMedium2 minQB

PhysicsMediumsingle choice

The pressure and density of a gas $(γ = 1.5)$ changes from $(P, ρ)$ to $(P^{'}, ρ^{'})$ during adiabatic changes. If $ρ^{'} / ρ = 32$ , then $P^{'} / P$ will be

Options:

Answer:

Solution:

Adiabatic: $P V^{γ} =$ const with $V \propto 1/ ρ \Rightarrow P \propto ρ^{γ}$ .

$\frac{P ^{'}}{P} = (\frac{ρ ^{'}}{ρ})^{γ} = 3 2^{1.5} = 2^{7.5} \approx 181.$

None of 128, 1/128, 32, 1/32 matches.

Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:Thermodynamics

⏱ 2mℹ️ Source: QB

Doubts & Discussion

Loading discussions...