Sound WavesMedium
Question
An earth quake generates both transverse (S) and longitudinal (p) sound waves in the earth. The speed of S wave is about 4.5km/s. A seismograph records P and S wave from earthquake. The first Pave The epicenter of the earthquake. The first P wave arrives 4.0 min. is before the first S wave The epicenter of the earthquake is located at a distance of about :
Options
A.25 km
B.250 km
C.2500 km
D.5000 km
Solution
Let d be the distance of epicenter.
Time take by S-wave
Time taken by P-wave
Now
= 4 × 60
d
= 4 × 60
⇒  d =
= 2468.5 ≈ 2500 km
Time take by S-wave
Time taken by P-wave
Now
= 4 × 60d
= 4 × 60⇒  d =
= 2468.5 ≈ 2500 kmCreate a free account to view solution
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