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  9. Q25

RRB NTPC 2021 · Question 25 of 131

What do we call the force which affects the direction of wind and is caused by the rotation of the earth on its axis?

  1. AFrictional force
  2. BPressure gradient force
  3. CGravitational force
  4. DCoriolis forceCorrect

Answer: D. Coriolis force

Explanation

Because the Earth rotates on its axis, circulating air is deflected toward the right in the Northern Hemisphere and toward the left in the Southern Hemisphere. This deflection is called the Coriolis effect.

Source: RRB NTPC 2021 CBT 1 Previous Year Paper (3 Feb) — ixambee compilation with answer key · reliable-secondary

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