Two monoatomic ideal gases 1 and 2 of molecular masses ${\mathrm{m}}_1 \mathrm{and} {\mathrm{m}}_2$ respectively are enclosed in separate containers kept at the same temperature. The ratio of the speed of sound in gas 1 to that in gas 2 is given by is given by

• A

  $\sqrt{\frac{{\mathrm{m}}_1}{{\mathrm{m}}_2}}$

• B

  $\sqrt{\frac{{\mathrm{m}}_2}{{\mathrm{m}}_1}}$

• C

  $\frac{{\mathrm{m}}_1}{{\mathrm{m}}_2}$

• D

  $\frac{{\mathrm{m}}_2}{{\mathrm{m}}_1}$