An earthquake generates both transverse (S) and longitudinal (P) waves in earth. The speed of S waves is about 4.5 kms-1 and that of P wave 8.0 kms-1. A seismograph records P and S waves from an earthquake. The first P wave arrives 4.0 min before the first S wave. The epicentre is located at a distance of about:

An earthquake generates both transverse (S) and longitudinal (P) waves

1.	An earthquake generates both transverse (S) and longitudinal (P) waves in earth. The speed of S waves is about 4.5 kms-1 and that of P wave 8.0 kms-1. A seismograph records P and S waves from an earthquake. The first P wave arrives 4.0 min before the first S wave. The epicentre is located at a distance of about:
A.	25 km
B.	250 km
C.	2500 km
D.	25000 km
Answer» D. 25000 km