Reason (R): Arakan Hills along the coast of Myanmar deflect the monsoon winds of the Bay of Bengal towards the Indian subcontinent
The Assertion (A) states that the monsoon enters West Bengal and Bangladesh from the south and southeast direction. This is factually correct. The Indian Summer Monsoon typically has two main branches: the Arabian Sea branch and the Bay of Bengal branch. The Bay of Bengal branch moves northwestward and significantly influences the climate of West Bengal and Bangladesh, often arriving from the south or southeast.
The Reason (R) explains that the Arakan Hills along the coast of Myanmar deflect the monsoon winds originating from the Bay of Bengal towards the Indian subcontinent. This statement is also factually correct. The Arakan Mountains form a barrier that guides the moist monsoon winds blowing from the Bay of Bengal more directly into Bangladesh and the northeastern parts of India, including West Bengal.
The deflection of the Bay of Bengal monsoon winds by the Arakan Hills (Reason R) is the direct cause for these winds entering regions like West Bengal and Bangladesh from the south and southeast (Assertion A). Therefore, Reason (R) provides a correct and accurate explanation for Assertion (A).
Thus, the correct option is that both A and R are true, and R is the correct explanation of A.
Choose the correct combination of the physical properties (A, B, C and D) that are TRUE for the Indian summer monsoon system.
A – deep, B – moist, C – barotropic, D – baroclinic
Choose the correct combination of the following statements (A, B, C and D) that is TRUE for the Indian Northeast monsoon.
A. Northeast India gets maximum rainfall.
B. The winds are north-easterlies over Bay-of- Bengal.
C. Maximum number of tropical depressions, storms and cyclones are formed over Arabian Sea.
D. ITCZ is located south of $20^\circ\text{N}$