38. In the two vessels of same volume, atomic hydrogen and helium at pressure 1 atm and 2 atm are filled. If temperature of both the samples is same, then average speed of hydrogen atoms
< CH > will be related to that of helium < CHe > as
(a) < CH >=√2 < CHe > (b) < CH >= < CHe >
(c) < CH >=2 < CHe > (d) < CH >=< CHe > /2
Answer-c
(7)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (126)