Q14 · UPSC Prelims 2024 · Set A · Geography

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With reference to "Coriolis force", which of the following statements is/are correct ?1.It increases with increase in wind velocity.2.It is maximum at the poles and is absent at the equator. Select the answer using the code given below :

A 1 only
B 2 only
C Both 1 and 2
D Neither 1 nor 2

Correct answer: (c) Both 1 and 2

Explanation

  1. A

    1 only

    1 only. The pole/equator pattern (2) is also keyed.

  2. B

    2 only

    2 only. Magnitude also rises with wind speed (1).

  3. C

    Both 1 and 2

    Both. Coriolis increases with velocity; max at poles, zero at equator.

  4. D

    Neither 1 nor 2

    Neither. Both textbook properties hold.

Summary. Official key is (c) both. Coriolis acceleration is 2Ωv sinφ. It therefore increases with wind speed and with latitude: maximum at the poles, zero at the equator. Both statements are correct.

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