Bernoulli’s Principle NEET Questions

Physics - Properties of Solids and Liquids

Bernoulli’s Principle MCQ Questions


1.
Bernoulli's theorem is essentially a statement of:
A.
Conservation of momentum for fluid flow
B.
Conservation of mass for fluid flow
C.
Conservation of energy applied to non-viscous fluid motion in steady state
D.
Newton's third law applied to fluids
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ANSWER :
C. Conservation of energy applied to non-viscous fluid motion in steady state
2.
Bernoulli's equation for fluid flow in a pipe is:
A.
P + ρgh = constant
B.
P + ½ρv² + ρgh = constant
C.
P + ½ρv² = constant
D.
P − ½ρv² + ρgh = constant
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ANSWER :
B. P + ½ρv² + ρgh = constant
3.
In Bernoulli's equation P + ½ρv² + ρgh = constant, the term ½ρv² represents:
A.
Gravitational potential energy per unit volume
B.
Kinetic energy per unit volume
C.
Total mechanical energy
D.
Pressure energy per unit volume
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ANSWER :
B. Kinetic energy per unit volume
4.
The full form of Bernoulli's equation between two points 1 and 2 along a streamline is:
A.
P₁ + ρgh₁ = P₂ + ρgh₂
B.
P₁ + ½ρv₁² + ρgh₁ = P₂ + ½ρv₂² + ρgh₂
C.
P₁v₁A₁ = P₂v₂A₂
D.
½ρv₁² = ½ρv₂²
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ANSWER :
B. P₁ + ½ρv₁² + ρgh₁ = P₂ + ½ρv₂² + ρgh₂
5.
Bernoulli's theorem was developed by Daniel Bernoulli in:
A.
1838
B.
1638
C.
1538
D.
1738
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ANSWER :
D. 1738
6.
Bernoulli's principle is derived using the work-energy theorem applied to a small fluid element. The work done on the fluid at the left end (BC) in time Δt for pressure P₁, area A₁, velocity v₁ is:
A.
W₁ = ρgh₁ΔV
B.
W₁ = ½ρv₁²ΔV
C.
W₁ = P₁A₁v₁Δt = P₁ΔV
D.
W₁ = P₁/A₁
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ANSWER :
C. W₁ = P₁A₁v₁Δt = P₁ΔV