Question

Define (l) seismic focus, and (ii) epicentre of an earthquak​

Answer 1

The hypocenter is the point within the earth where an earthquake rupture starts. The epicenter is the point directly above it at the surface of the Earth. Also commonly termed the focus. See also epicenter.

Answer 2

Answer:

Seismic focus

The hypocenter is the point within the earth where an earthquake rupture starts. Also commonly termed the focus. ... See also epicenter.

epicenter of an earthquake

The epicenter, epicentre or epicentrum in seismology is the point on the Earth's surface directly above a hypocenter or focus, the point where an earthquake or an underground explosion originates.

I hope it helps you..

please follow me and mark me as a brainlist..