Speed of sound in a gas from its ratio of specific heats, molar mass and temperature

1. A.
   400 m/s
2. B.
   401 m/s
3. C.
   402 m/s
4. D.
   403 m/s

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1. A.
   $2.25$
2. B.
   $1.96$
3. C.
   $1.5$
4. D.
   $1.4$

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1. A.
   $\sqrt{\dfrac{2}{7}}$
2. B.
   $\sqrt{\dfrac{3}{5}}$
3. C.
   $\dfrac{\sqrt{3}}{5}$
4. D.
   $\dfrac{5}{\sqrt{3}}$

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1. A.
   $\sqrt{\dfrac{m_1}{m_2}}$
2. B.
   $\sqrt{\dfrac{m_2}{m_1}}$
3. C.
   $\dfrac{m_1}{m_2}$
4. D.
   $\dfrac{m_2}{m_1}$

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