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The point where the energy is released during the earthquake is called :

  • A.Epicentre
  • B.Hypocentre
  • C.Circumcentre
  • D.Isocentre

Answer: B

The point where energy is released is the hypocentre (focus).

An earthquake begins at the point within the Earth where the rupture starts and seismic energy is first released. This is the hypocentre, or focus, and it may be a few kilometres to about 700 km deep.

The epicentre is the point on the Earth's surface directly above the hypocentre, which is where shaking is usually reported, but it is not where the energy is released. Circumcentre is a term from geometry, and 'isocentre' is not a seismological term; lines of equal intensity are isoseismals.

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