1.

The root mean square speed of the molecules of a diatomic gas is v. When the temperature is doubled, the molecules dissociates into two atoms. The new root mean square speed of the atom isA. `100 (sqrt(2))/3`B. `100 (sqrt(2))`C. `400/(sqrt(3))`D. None of these

Answer» Correct Answer - C
`v_(rms) = sqrt((3RT)/(M))`. According to problem `T` will `T//2` and `M` will becomes `M//2` so the value of `v_(rms)` will increase by `sqrt(4) = 2` times i.e., new root mean square velocity will be `2v`.


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