Explanation: The Bay of Bengal branch of the monsoon is a critical component of the Indian monsoon system, which significantly influences the climate and weather patterns of the Indian subcontinent. This branch originates over the Bay of Bengal and is influenced by various geographical features, particularly the Arakan Hills.
The Arakan Hills, located in the north-western part of Myanmar, play a crucial role in deflecting the Bay of Bengal branch of the monsoon towards the Indian subcontinent. This deflection is due to the orographic effect, where the hills force the moist air to rise, cool, and condense, leading to precipitation. This process is essential for the monsoon's progression into the Indian subcontinent, particularly into regions like West Bengal.
Statement 1 is incorrect because the Bay of Bengal branch of the monsoon does not directly strike the coast of Myanmar and north Bangladesh. Instead, it is influenced by the Arakan Hills, which deflect the monsoon winds towards the Indian subcontinent. This deflection is a key factor in the monsoon's path and its impact on the Indian subcontinent.
Statement 2 is correct. The Arakan Hills indeed deflect the Bay of Bengal branch of the monsoon towards the Indian subcontinent. This deflection is a well-documented phenomenon in meteorology and is crucial for understanding the monsoon's impact on the Indian subcontinent.
Statement 3 is incorrect. The monsoon does not enter West Bengal from the south-westerly direction. Instead, it enters from the south-east, influenced by the deflection caused by the Arakan Hills. This misconception might arise from a misunderstanding of the monsoon's path and the influence of geographical features on its direction.
In conclusion, the correct answer is B) Only 2, as the Arakan Hills play a significant role in deflecting the Bay of Bengal branch of the monsoon towards the Indian subcontinent, which is a critical aspect of the monsoon's impact on the region. Understanding these geographical influences is essential for comprehending the climatic patterns and weather systems of the Indian subcontinent.