Question

Define Seismic Focus

Answer 1

The point from which earthquake tremors,is called as it's "seismic focus".
The place of origin of earthquake within the Earth is called as seismic focus.

Answer 2

                                        Seismic Focus

• Seismic focus is defined as the centre point in which the seismic waves originate and the results in the occurrences of earthquake in the earth premises.
• There is the primary difference between the seismic focus and the epicenter.
• The seismic focus is formed inside the earth's surface, focusing on the center point originating the earthquake.
• Whereas the epicenter is the “point on the surface” of the earth, that is vertically above the point of seismic focus.