Question

Sunil is standing between two parallel worlds the wall closest to him is at a distance of 660 metre if he shouts years the first to go after 4 seconds and another after another two seconds first what is the velocity of sound​

Answer 1

$\red{\textbf{Answer :-}}$

$distance = 330m/s$

$velocity= 1650m$

Explanation:

$\LARGE\textsf{Given :-}$

$\textsf{distance between closest wall = 660m}$

$\textsf{echo time = 4 sec}$

$\red{\textbf{velocity of sound = }}$

$2 \times \LARGE \frac{distance}{time}$

$distance= 660 \times \LARGE \frac{2}{4}$

$distance = 330m/s$

$\red{\textbf{velocity (v) = }}$

$\LARGE \frac{2(x - 660)}{6}$

$330 × 6 = 2 (x - 660)$

$\LARGE\frac{1980}{2} \small = x- 660$

$990 = x - 660$

$velocity= 1650m$

$\textsf{so, velocity of sound = 1650m}$

$\red{\textbf{More information :-}}$

• The velocity of sound is a vector u whose magnitude |u| is the speed of sound u and whose direction is normal to the surface of constant phase.

• Sound velocities vary as ρ1/2 where ρ is the mass density, while the highest frequency in a solid with different masses tends to vary as Ml/2 where M is the lightest atomic mass.