Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoKTGEasy2 minPYQ_2021

PhysicsEasysingle choice

The number of molecules in one litre of an ideal gas at $300 K$ and $2$ atmospheric pressure with mean kinetic energy $2 \times 10^{- 9} J$ per molecule is:

Options:

Answer:

Solution:

$K E = \frac{3}{2} k T$
$P V = \frac{N}{N_{A}} R T$
$N = \frac{P V}{k T}$
$= N = 1.5 \times 10^{11}$

Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:KTG

⏱ 2mℹ️ Source: PYQ_2021

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