If a gas contains molecules of two diffe...

If a gas contains molecules of two different masses `m_1 and m_2` both at the same temperature, then `(v_1/ v_2)_(r.m.s.)` is:

`m_1/ m_2`

`m_2/m_1`

`sqrt(m_1/m_2`

`sqrt(m_2/m_1`

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