A) water
B) air
C) vacuum
D) steel
Correct Answer: D
Solution :
Velocity sound in any elastic medium is given by \[v=\sqrt{\frac{E}{\rho }}=\sqrt{\frac{\text{Elasticity}\,\text{of}\,\text{the}\,\text{medium}}{\text{Density}\,\text{of}\,\text{the}\,\text{medium}}}\] As solids are most elastic while gases least ie,\[{{E}_{S}}>{{E}_{L}}>{{E}_{G.}}\]So, the velocity of sound is maximum in solid and minimum in gases. Hence, \[{{v}_{steel}}>{{v}_{water}}>{{v}_{air}}\] \[5000\,m{{s}^{-1}}>1500\,m{{s}^{-1}}>330\,m{{s}^{-1}}\]
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