Q10.A fully loaded boeing aircraft has a mass of 5. 4 × 105 kg. Its total wing area is 500 m2 . It is in level flight with a speed of 1080 km h−1 . If the density of air ρ is 1. 2 kg m–3 , the fractional increase in the speed of the air on the upper surface of the wing relative to the lower surface in percentage will be ( g = 10 m s−2 ) (1) 16 (2) 6 (3) 8 (4) 10
What This Question Tests
This question tests the application of Bernoulli's principle to calculate the lift on an aircraft wing and relate it to the fractional increase in air speed.
Concepts Tested
Formulas Used
P₁ + ½ρv₁² + ρgh₁ = P₂ + ½ρv₂² + ρgh₂
Lift Force = (P_lower - P_upper) × Area
Lift Force = Mg
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📋 Question Details
- Chapter
- Properties of Matter
- Topic
- Bernoulli's principle and fluid dynamics
- Year
- 2023
- Shift
- 29 Jan Shift 2
- Q Number
- Q10
- Type
- MCQ
- NCERT Ref
- Class 11 Physics Ch 10: Mechanical Properties of Fluids
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