Q. The pitching moment of a positively cambered NACA airfoil about its leading edge at zero- lift angle of attack is
(A) negative.
(B) positive.
(C) indeterminate.
(D) zero.
Ans: negative
![Determine the correctness (or otherwise) of the following Assertion [A] and the Reason [R]](https://www.gkseries.com/blog/wp-content/uploads/2023/10/Determine-the-correctness-or-otherwise-of-the-following-Assertion-A-and-the-Reason-R.jpg)
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