Mechanical Properties of Fluids (Class 12)
Viscosity, Stokes' law, Bernoulli's principle, surface tension, Reynolds number.
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Take a full mock →Q1 · Mechanical Properties of Fluids (Class 12) · MEDIUM
A small steel ball of radius 1 mm falls through a viscous liquid with a terminal velocity of 2 cm/s. If the density of steel is 7800 kg/m³ and density of liquid is 800 kg/m³, what is the coefficient of viscosity of the liquid? (Take g = 10 m/s²)
Q2 · Mechanical Properties of Fluids (Class 12) · EASY
Water flows through a horizontal pipe of cross-sectional area 10 cm² with a velocity of 2 m/s. The pipe narrows to a cross-sectional area of 5 cm². What is the velocity of water in the narrower section?
Q3 · Mechanical Properties of Fluids (Class 12) · HARD
A liquid rises to a height of 5 cm in a capillary tube of radius 0.2 mm. If the surface tension of the liquid is 0.05 N/m and the angle of contact is 0°, what is the density of the liquid? (Take g = 10 m/s²)
Q4 · Mechanical Properties of Fluids (Class 12) · MEDIUM
A rectangular block of mass 400 g and cross-sectional area 40 cm² floats on a liquid of density 1.2 g/cm³. When displaced vertically and released, it oscillates with frequency n. What is n? (g = 10 m/s²)