A) The mean speed of the molecules doubles
B) Root mean square speed of the molecules doubles
C) Mean square speed of the molecules doubles
D) Mean square speed of the molecules remains unchanged
Correct Answer: C
Solution :
Ideal gas equation is \[pV=nRT\] As volume is constant \[p\propto T\] When \[p'=2p\to T'=2T\] As \[v_{rms}^{2}\propto T',\,v_{rms}^{2}\,doubles.\]
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