Explanation: In Indian geography, the orientation of mountain ranges relative to the direction of the South West monsoon winds is a critical factor in determining the distribution of rainfall across the country. The South West monsoon, which is a significant weather pattern in India, brings heavy rainfall from the Arabian Sea and the Bay of Bengal, primarily affecting the western and southern parts of the country from June to September.
The Aravali Range, located in the northwestern part of India, runs in a north-south direction. This orientation is parallel to the path of the South West monsoon winds, which generally blow from the south-west. This alignment is important because it influences the amount of rainfall received by different regions. When the monsoon winds encounter the Aravali Range, they are forced to rise, leading to orographic precipitation on the windward side of the mountains. This phenomenon is known as the rain shadow effect, where the windward side of the mountains receives more rainfall, while the leeward side receives less.
The other mountain ranges mentioned in the options do not align with the South West monsoon winds in the same way. The Maikala Range, located in central India, runs in a north-east to south-west direction, which is perpendicular to the monsoon winds. Similarly, the Satpura Range and the Vindhya Range also run in a north-east to south-west direction, which is not parallel to the monsoon winds.
Understanding the orientation of these mountain ranges and their relationship to the monsoon winds is crucial for comprehending the geographical and climatic conditions of different regions in India. This knowledge is particularly important for students preparing for competitive examinations such as the UPSC Civil Services, SSC CGL, and State PSC Exams, where questions on Indian geography and climate patterns are frequently asked.