Q. Which of the following factors primarily influences the Indian monsoon?
1.Differential heating of land and sea
2.Presence of high-pressure area over the Indian Ocean
3.Jet streams in the upper troposphere
4.Western disturbances
Select the correct answer using the code below:
Answer: D
Notes:
Explanation:
- Monsoon is primarily driven by the differential heating of land and sea. The subtropical high-pressure area over the Indian Ocean pushes moist winds toward India. Jet streams, particularly the Tropical Easterly Jet and Subtropical Westerly Jet, guide monsoon winds.
- Western disturbances, though a winter phenomenon, influence monsoon’s northward movement and impact.
Source: India Physical Environment (Class 11th NCERT)
