1. Assertion (A): 60°-65° latitudes in both the hemispheres have a low-pressure belt instead of high pressure.
2. Reason (R): The low-pressure areas are permanent over oceans rather than on land.
A
Both A and R are individually true and R is the correct explanation of A
B
Both A and R are individually true but R is not a correct explanation of A
C
A is true but R is false
D
A is false but R is true
Correct Answer: Option B
Explanation
1. Assertion (A) states that the 60°-65° latitudes in both hemispheres have a low-pressure belt instead of high pressure. This is true. This zone is known as the Subpolar Low-Pressure Belt. Dynamic factors (rising air due to convergence of winds from subtropical highs and polar highs, and rotational effects) lead to generally low pressure here, despite the cold temperatures.
2. Reason (R) states that the low-pressure areas are permanent over oceans rather than on land. This statement is partially true in principle (water bodies moderate pressure changes compared to land), but it's not the primary reason for the existence of the Subpolar Low itself, nor is it entirely accurate regarding permanence. Pressure belts shift seasonally, and while the Subpolar Low is more continuous over the Southern Ocean, it breaks into cells (like the Aleutian Low, Icelandic Low) over the Northern Hemisphere land/ocean masses. More importantly, R doesn't explain *why* there is low pressure at 60°-65° latitude (A). The reason for A relates to atmospheric circulation dynamics (convergence and uplift), not just ocean vs. land distribution.
3. Therefore, Assertion (A) is true but Reason (R) is false as a complete or accurate explanation for A, and its own general validity is questionable regarding permanence. [Self-correction: The provided answer is 'c' (A is true but R is false). This aligns with the analysis that R is not the correct explanation and may be considered generally inaccurate in this context. *Analysis confirms A is true, R is false/incorrect explanation.*]