Which mechanism causes eastward deflection of geostrophic winds in the Northern Hemisphere?

💡 Explanation

When air moves due to pressure gradients coupled with Earth's rotation, the Coriolis effect occurs because inertia resists changes in rotational velocity, causing deflection. Therefore, eastward deflection results in the Northern Hemisphere, rather than other forces providing the primary deflection such as solar heating, friction or pressure gradients alone.

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