Question

Which are the two forces balanced by the geostrophic wind?

(a) Coriolis effect and pressure gradient force

(b) Coriolis force and centrifugal force

(c) Frictional force and pressure gradient force

(d) Pressure gradient force and centrifugal force

I had been asked this question in a job interview.

This intriguing question originated from Air Pollution in portion Air Pollution of Environmental Engineering

Answer 1

Correct choice is (a) Coriolis effect and pressure gradient force

For explanation I would say: Geostrophic winds are those winds which blow parallel to isobars when the both the Coriolis force and pressure gradient force are balanced.