JEE Main 2022 Physics question

PhysicsKinetic Theory of GasesJEE Main 2022

Given below are two statements : Statement I : The average momentum of a molecule in a sample of an ideal gas depends on temperature. Statement II : The rms speed of oxygen molecules in a gas is v. If the temperature is doubled and the oxygen molecules dissociate into oxygen atoms, the rms speed will become 2v. In the light of the above statements, choose the correct answer from the options given below:

Answer: (D)

Solution

The average momentum (a vector average over molecules moving randomly in all directions) is zero at every temperature, so Statement I is false. For

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Question ID VK-034723