By what factor does the average velocity of a gaseous molecule increase when the absolute temperature is doubled?
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a
1.4
b
2.8
c
2.0
d
4.0
answer is A.
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Detailed Solution
average velocity of gas ravg=8RTM12 r1r2=T1T212 =T2T12 r2=1.414 r1 , On doubling the temperature, the average velocity will be (2)1/2 i.e., 1.414 times.