Assertion (A) : Anticyclonic conditions are formed in the winter season when atmospheric pressure is high and air temperatures are low. Reason (R) : Winter rainfall in northern India causes develop- ment of anticyclonic conditions with low temperatures.
✓ Correct answer: a) Both A and R are true and R is the correct explanation of A
ExplanationAssertion (A) is true : Anticyclonic conditions are character- ized by high atmospheric pressure and sinking air, which leads to clear skies and low temperatures.These conditions are com- mon in winter, especially in northern India after a cyclonic rain from western disturbances.Reason (R) is true : Winter rainfall in northern India, such as the Western Disturbances, is the result of cyclonic (low-pressure) conditions.However, this rain also creates conditions of anti- cyclonic activity.R correctly explains A : Cyclonic activities beyond the Indian border bring rain to India in winter.This creates a high Pressure area with light winds radiating outwards.This wind creates anti- cyclonic activity in northern India.Thus, Reason (R) is the correct explanation of Assertion (A).UPSC GS Paper-I PYQs 414Anticyclone Formation : Anticyclones are centers of high pressure.They are surrounded by closed isobars having decreasing pressure outward.The circulation is from central high pressure towards the periphery in such a way that air blows outwards in a clockwise direction in the Nor
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