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Laws of Motion — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysicsLaws of Motion1 Mark
Question
Why do aeroplanes having wings fly at low altitudes?
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Answer

The wings of aeroplane push the air backwards and the reaction of the air pushes the plane forward. At low altitudes, air is dense and as such the reaction of the air on plane is large.

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