# NEET Physics Waves Questions Solved

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The ratio of densities of nitrogen and oxygen is 14:16. The temperature at which the speed of sound in nitrogen will be same at that in oxygen at 55°C is

(1) 35°C

(2) 48°C

(3) 65°C

(4) 14°C

(4) $v=\sqrt{\frac{\gamma \text{\hspace{0.17em}}RT}{M}}$$\frac{{T}_{N}}{{T}_{0}}=\frac{{M}_{N}}{{M}_{0}}$$\frac{{T}_{N}}{273+55}=\frac{14}{16}=\frac{7}{8}$

${T}_{N}=287K=14°C$

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