A sealed container with negiligible coefficient of volumetric expansion contains helium (a monatomic gas). When it is heated from 300 K to 600 K, the average KE of helium atoms isA. halvedB. unchangedC. doubledD. increased by factor `sqrt2`

A sealed container with negiligible coefficient of volumetric expansio

1.	A sealed container with negiligible coefficient of volumetric expansion contains helium (a monatomic gas). When it is heated from 300 K to 600 K, the average KE of helium atoms isA. halvedB. unchangedC. doubledD. increased by factor `sqrt2`
Answer» Correct Answer - C As, kinetic enregy of gas is given as `" "K=1/2mv_(rms)^(2)` Also,`" "v_(rms)=sqrt((3KT)/M)` Now, `v_(rms)prop sqrtT rArr(K_(2))/(K_(1))=[((v_(rms))_(2))/((v_(rms))_(1))]=[sqrt(T2)/sqrt(T_(1))]^(2)` `rArr" "K_(2)=K_(1)((T_(2))/(T_(1)))rArrK_(2)=K_(1)((600)/(300))` `therefore" "K_(2)=2K_(1)`

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A sealed container with negiligible coefficient of volumetric expansion contains helium (a monatomic gas). When it is heated from 300 K to 600 K, the average KE of helium atoms isA. halvedB. unchangedC. doubledD. increased by factor `sqrt2`

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