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PhysicsHeat & ThermoKTGMedium2 minPYQ_2021
PhysicsMediumnumerical

The root-mean-square speed of molecules of a given mass of a gas at27 °Cand1atmosphere pressure is200 m s-1.The root-mean-square speed of molecules of the gas at127 °Cand2atmosphere pressure isx3 m s-1.The value ofxwill be __________.

Answer:
400.00
Solution:

vrms=3RTMvrmsTvrms2vrms1=T2 T1=400300=23

vrms2=23vrms1=23×200vrms2=4003 m s-1.

Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:KTG
2mℹ️ Source: PYQ_2021

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