At a pressure of 10 atm , the density of a certain gas is $\;1.4\times10^{-3}\;gm/cm\;$ . If the specific heat ratio for this gas is 1.4 , the velocity of sound in this gas is

Question

$(a)\;1000\;m/s\qquad(b)\;2000\;m/s\qquad(c)\;500\;m/s\qquad(d)\;None\;of\;these$