JEE Main 2024 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 29 January 2024, Shift 1, Physics Q53

Question 53 of 90 in this shift, Physics question 23 of 30, Section B.

In a test experiment on a model aeroplane in wind tunnel, the flow speeds on the upper and lower surfaces of the wings are

70\ \mathrm{ms^{-1}}

and

65\ \mathrm{ms^{-1}}

respectively. If the wing area is

2\ \mathrm{m^2}

, the lift of the wing is ______ N. (Given density of air = 1.2 kg m

^{-3}

)

Official answer

810

NTA final key.

Chapter: Mechanical Properties of Fluids
Topic: Fluid Dynamics
Idea tested: Dynamic Lift and Magnus Effect

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.