Explanation: The retreating monsoon in India is a significant weather phenomenon that occurs from October to December. During this period, the monsoon winds start to withdraw from the Indian subcontinent, leading to a change in weather patterns. The eastern part of the Indian Peninsula, particularly the Coromondal Coast, experiences substantial rainfall during this time, which is crucial for agriculture and water resources in the region.
The first statement asserts that October and November are the rainiest months in the eastern part of the Peninsula. This is correct because, as the monsoon winds retreat, they often bring heavy rainfall to the eastern coast, especially in these months. The Coromondal Coast, which includes the coastal regions of Andhra Pradesh and Tamil Nadu, receives a significant amount of its rainfall during this period.
The second statement mentions that a bulk of the rainfall of the Coromondal Coast is derived from cyclonic depressions originating over the Andaman Sea. This is also correct. Cyclonic depressions are low-pressure systems that form over warm ocean waters, such as the Andaman Sea. These depressions can intensify into tropical cyclones and move towards the eastern coast of India, bringing heavy rainfall and sometimes destructive winds.
The third statement states that these cyclonic depressions bring destructive tropical cyclones to the eastern coast. This is accurate as well. While cyclonic depressions can bring much-needed rainfall, they can also intensify into tropical cyclones, which can cause significant damage to life and property. The eastern coast of India, particularly the states of Andhra Pradesh and Tamil Nadu, are vulnerable to such cyclones, which can lead to flooding, landslides, and other natural disasters.
In summary, all three statements are correct and provide a comprehensive understanding of the retreating monsoon and its impact on the eastern coast of India. The combination of heavy rainfall, cyclonic depressions, and the potential for destructive tropical cyclones makes the retreating monsoon a critical period for weather patterns and natural disasters in this region.