MCQ
Velocity of sound measured in hydrogen and oxygen gas at a given temperature will be in the ratio
- A$1:4$
- ✓$4:1$
- C$2:1$
- D$1:1$
✓
Answer
Correct option: B.
$4:1$
b
$v \propto \frac{1}{{\sqrt M }}$
$v \propto \frac{1}{{\sqrt M }}$
$\Rightarrow \frac{{{v_{{H_2}}}}}{{{v_{{O_2}}}}} = \sqrt {\frac{{{M_{{O_2}}}}}{{{M_{{H_2}}}}}} = \sqrt {\frac{{32}}{2}} $
$\Rightarrow \frac{{{v_{{H_2}}}}}{{{v_{{O_2}}}}} = \frac{4}{1}$
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