JEE Main 2022 Physics question

What will be the effect on the root mean square velocity of oxygen molecules if the temperature is doubled and oxygen molecule dissociates into atomic oxygen?

(1)The velocity of atomic oxygen remains same
(2)The velocity of atomic oxygen doublesCorrect
(3)The velocity of atomic oxygen becomes half
(4)The velocity of atomic oxygen becomes four times

Answer: (2)

Solution

= . When T is doubled and the molar mass is halved ,

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Question ID VK-034814