Choose the right answer from the four alternatives given below.

What causes rainfall on the coastal areas of Tamil Nadu in the beginning of winters?



C is correct. The retreating south-west monsoons travel over Bay of Bengal, and gain moisture. While exiting the sub-continent, these winds cross the peninsula in north-east to south-west direction. As they pass over Tamil Nadu, the discharge their moisture as winter rains.


A is incorrect. South West Monsoon causes heavy rainfall in Kerala during June-August months, as it is the harbinger of rainy season in the country. they do not pass over the West coast on arrival


B is incorrect. Temperate cyclones occur 35 degrees to 65 degrees north of equator, but Tamil Nadu lies under 20 degrees latitude.


D is incorrect. Local air circulation occurs close to the equator, but Tamil Nadu is too far from the equator to be affected by it.

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