Question

The velocities of sound waves in four media P, Q, R and S are 18,000 km/ h, 900 km/h, 0 km/h, and 1200 km/h respectively. Which medium could be a liquid substance ?

(a) P

(b) Q

(c) R

(d) S

Answer 1

Substance P: 18000 km/h

$Asweknow,$

$V=\sqrt{\frac{Y}{p}};velocityofsoundinsolid$

$V=\sqrt{\frac{yRT}{M}};velocityofsoundingas$

$V=\sqrt{\frac{B}{p}}velocityofsoundinliquid$

Note:

p represent density of the medium

The speed of sound in liquids is in the range of 4500 m/s.