Wave Mechanics Question 636
Question: The bulk modulus of a liquid of density 8000 kg $ 8000kg,{{m}^{-3}} $ is $ 2\times 10^{9}N,{{m}^{-2}} $ . The speed of sound in that liquid is ( $ in,m,{{s}^{-1}} $ )
Options:
A) 200
B) 250
C) 100
D) 500
Show Answer
Answer:
Correct Answer: D
Solution:
[d] The speed of sound in liquid, $ v=\sqrt{\frac{k}{\rho }}=\sqrt{\frac{2\times 10^{9}}{8000}}=\sqrt{\frac{1}{4}\times 10^{6}} $
$ v=\frac{1}{2}\times 10^{3}=500m,{{s}^{-1}} $
BETA
