NEET Physics / AI question bank / NCERT Class 11 / Properties of Solids and Liquids
Mechanical Properties of Fluids: NEET questions with solutions
NEET uses this chapter for pressure with depth and gauge pressure, hydraulic lifts, continuity with Bernoulli's equation, Torricelli's law, terminal velocity from Stokes' law, excess pressure in drops and bubbles, and capillary rise. Marks are lost by mixing gauge and absolute pressure, using diameter as radius, and giving a soap bubble 2S/r instead of 4S/r.
Also called: fluid mechanics · Bernoulli's theorem · viscosity · surface tension
Questions
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- Q1A diver descends in a freshwater lake (density 1000 kg m⁻³). Atmospheric pressure at the surface is 1.0 × 10⁵ Pa; take g = 10 m s⁻². At what…
Atmospheric and gauge pressureEasySingle correct
- Q2In a hydraulic lift the small piston has area 10 cm² and the large piston has area 500 cm². What force on the small piston will just support…
Hydraulic machinesEasySingle correct
- Q3A soap bubble and a liquid drop of equal radius are made from the same soap solution. Decide whether the Assertion (A) about their excess…
Angle of contact, drops and bubblesEasyAssertion–Reason
- Q4Water flows steadily through a horizontal pipe that narrows from a cross-section of 20 cm² to 5 cm². The speed in the wide part is 1.0 m…
Bernoulli's principleMediumSingle correct
- Q5An open tank stands on level ground. A small hole in its side is 1.8 m above the ground and 0.80 m below the water surface. Take g = 10 m…
Bernoulli's principleMediumSingle correct
- Q6A steel ball of radius 1.0 mm falling through glycerine reaches a terminal speed of 2.0 cm s⁻¹. What terminal speed will a ball of the same…
Viscosity and Stokes' lawMediumSingle correct
- Q7A clean glass capillary of internal diameter 0.40 mm is dipped vertically in water. Surface tension of water = 0.072 N m⁻¹, angle of contact…
Capillary riseMediumSingle correct
- Q8Honey, air and glycerine all resist flow. Which of the claims I to IV about viscosity, its temperature dependence and Stokes' drag are…
Viscosity and Stokes' lawMediumStatement based
- Q9Air flows past the wing of a small aircraft at 70 m s⁻¹ over the upper surface and 60 m s⁻¹ under the lower surface. The wing area is 30 m²…
Dynamic liftHardSingle correct
- Q10A tiny air bubble of radius 0.10 mm is 0.50 m below the surface of water. Take atmospheric pressure = 1.00 × 10⁵ Pa, density of water = 1000…
Angle of contact, drops and bubblesHardSingle correct
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