Assertion (A) : The surface winds spiral inwards upon the centre of the cyclone. Reason (R) : Air descends in the centre of the cyclone.
✓ Correct answer: b) Both A and R are true but R is NOT a correct explanation of A
ExplanationA tropical cyclone is a powerful, rotating storm system characterized by strong winds, heavy rain, and low pressure, typ- ically forming over warm ocean waters in tropical regions.Assertion (A) is true : In a tropical cyclone, surface winds spi- ral inwards toward the low-pressure center due to the Cori- olis effect.The rotation direction depends on the hemisphere (counterclockwise in the Northern Hemisphere, clockwise in the Southern Hemisphere).Reason (R) is true : Air descends in the center of the cyclone, creating the eye of the storm, which is typically calm and free of rain.This descent is due to subsidence in the center of the low-pressure system.Reason (R) is NOT the correct explanation of Assertion (A): The inward spiraling of surface winds is caused by the pressure gradient force pulling air toward the low-pressure center and the Coriolis effect, not by the descending air in the cyclone’s center.62
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