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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoKTGMedium2 minQB

PhysicsMediumsingle choice

At temperature T the root mean square velocity of oxygen molecules is v. If the temperature is doubled, the gas dissociates and converts into atomic oxygen. Now the root mean square velocity will be :

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Answer:

Solution:

$v = \frac{3 RT}{M}$ ; after dissociation $M \to M /2$ and $T \to 2 T$ :

$v^{'} = \frac{3 R ( 2 T )}{M /2} = 2 \frac{3 RT}{M} = 2 v .$

Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:KTG

⏱ 2mℹ️ Source: QB

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