Two monoatomic ideal gases $1$ and $2$ of molecular masses $M_1$ and $M_2$ respectively are enclosed in separate containers kept a the same temperature. The ratio of the speed of sound in gas $1$ to that in gas $2$ is
Two monoatomic ideal gases $1$ and $2$ of molecular masses $M_1$ and $M_2$ respectively are enclosed in separate containers kept a the same temperature. The ratio of the speed of sound in gas $1$ to that in gas $2$ is
- A
$\sqrt {\frac{{{M_1}}}{{{M_2}}}} $
- B
$\sqrt {\frac{{{M_2}}}{{{M_1}}}} $
- C
$\frac{{{M_1}}}{{{M_2}}}$
- D
$\frac{{{M_2}}}{{{M_1}}}$
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