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Fluid Mechanics & Surface Tension
JEE Physics • 10 questions • Free on ExamBattle
Practice Questions
Q1
Bernoulli's principle is based on conservation of:
- A. Mass
- B. Energy
- C. Momentum
- D. Angular momentum
Q2
The excess pressure inside a soap bubble of radius R with surface tension T is:
- A. 2T/R
- B. 4T/R
- C. T/R
- D. T/2R
Q3
The coefficient of viscosity has SI unit:
- A. N·s/m
- B. Pa·s (or N·s/m²)
- C. N/m²
- D. kg/m
Q4
Water rises in a capillary tube because:
- A. Gravity pulls it up
- B. Adhesive forces exceed cohesive forces
- C. Atmospheric pressure pushes it
- D. Surface tension is zero
Q5
The terminal velocity of a sphere falling through a viscous fluid is proportional to:
- A. r
- B. r²
- C. r³
- D. 1/r
Q6
According to equation of continuity for fluids, A₁v₁ = A₂v₂ implies:
- A. Pressure is constant
- B. Mass flow rate is constant
- C. Velocity is constant
- D. Energy is constant
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