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1. |
The weight of an aeroplane flying in the air is balanced by [NCERT 1974] |
A. | Vertical component of the thrust created by air currents striking the lower surface of the wings |
B. | Force due to reaction of gases ejected by the revolving propeller |
C. | C |
D. | Force due to the pressure difference between the upper and lower surfaces of the wings created by different air speeds on the surfaces |
Answer» E. | |