 
			 
			MCQOPTIONS
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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. | |