Question

WAVES
6. At what temperature is the velocity of sound
in a gas is twice the velocity of sound in the
same gas at 27°C
a) 54°C b) 627°C c)927°C d) 327°C​

Answer 1

Answer:

C 927°C

Explanation:

IN GAS     V=$\sqrt{DRT/M}$

D= Density

T= Temperature

therefore,, V=$\sqrt{T\\}$

                 $V_{1} /V_{2}$ = $\sqrt{T_{1}/T_{2} }$

                 V/2V = $\sqrt{27+273/T_{2} }$

                   1/2= $\sqrt{300/T_{2\\} }$

                    $T_{2}$=1200 K

                    $T_{2}$= 1200-273

                    $T_{2}$= 927°C