Question

Example 12.1 A sound wave has a
frequency of 2 kHz and wave length
35 cm. How long will it take to travel
1.5 km?​

Answer 1

Speed of sound wave v=νλ=2000×0.35=700 m/s

Distance d=1.5 km=1500 m

Time t= d/v

= 1500/700

≈2 s

Answer 2

Answer:

Thus sound will take 2.1 s to travel a distance of 1.5 km.

Explanation:

Speed of sound wave v=νλ=2000×0.35=700 m/s

Distance d=1.5 km=1500 m

Time t= d/v

= 1500/700

≈2.1 s