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