Point of Origin of Earthquake Wave is known as

by

Point of Origin of Earthquake Wave is known as

Epicentre.
Focus.
Photosphere.
Seismic Zone.
This question was previously asked in
UPSC NDA-1 – 2021
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The point of origin of an earthquake *inside* the Earth is known as the focus or hypocenter. Earthquake waves (seismic waves) radiate outwards from this point.
The Focus (or Hypocenter) is the actual point within the Earth’s crust where an earthquake originates, due to the rupture of rocks along a fault line. The energy released at the focus propagates as seismic waves.
The Epicentre is the point on the Earth’s surface located directly above the focus. It is usually where the earthquake shaking is strongest and damage is often greatest. A Seismic Zone is an area where earthquakes are known to occur frequently. Photosphere is the visible surface of the Sun.

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