The speed of sound in air was measured as $V_1$ on a hot afternoon ($40^\circ\text{C}$) and as $V_2$ on a…
The speed of sound in air was measured as $V_1$ on a hot afternoon ($40^\circ\text{C}$) and as $V_2$ on a cold winter night ($10^\circ\text{C}$). Which of the following statements is correct?
$V_1 > V_2$
$V_1 < V_2$
$V_1 = V_2$
$V_2 = 2 \times V_1$
Solution
The speed of sound in air increases with an increase in air temperature, so $V_1$ at $40^\circ\text{C}$ is greater than $V_2$ at $10^\circ\text{C}$.