Pascal's Law and its Applications NEET Questions

Physics - Properties of Solids and Liquids

Pascal's Law and its Applications MCQ Questions


7.
Pascal's law is NOT applicable when:
A.
The fluid is at rest and enclosed
B.
The container is open to atmosphere
C.
The fluid is in motion (flowing) and not in static equilibrium
D.
The fluid density is uniform
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ANSWER :
C. The fluid is in motion (flowing) and not in static equilibrium
8.
When a piston is pushed into a cylinder containing fluid connected to three vertical tubes, the fluid level in the tubes:
A.
Rises only in the tube nearest to the piston
B.
Rises only in the farthest tube
C.
Does not change in any tube
D.
Rises equally in all three tubes, reaching the same level
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ANSWER :
D. Rises equally in all three tubes, reaching the same level
9.
Pascal's law has 'many applications in daily life.' Which of the following devices is NOT based on Pascal's law?
A.
Hydraulic lift
B.
Hydraulic brakes
C.
Hydraulic press
D.
Mercury barometer
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ANSWER :
D. Mercury barometer
10.
In a hydraulic lift, a small piston of cross-sectional area A₁ is used to exert force F₁ on the fluid. The pressure transmitted to a large piston of area A₂ produces an upward force F₂ equal to:
A.
F₂ = F₁ × (A₁/A₂)
B.
F₂ = F₁ × (A₂/A₁)
C.
F₂ = F₁ + A₂
D.
F₂ = F₁ / A₂
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ANSWER :
B. F₂ = F₁ × (A₂/A₁)
11.
The mechanical advantage of a hydraulic lift is defined as:
A.
A₂/A₁
B.
A₁/A₂
C.
F₁/F₂
D.
F₁ × F₂
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ANSWER :
A. A₂/A₁
12.
In a hydraulic lift, two pistons are separated by a liquid. A small piston of area A₁ = 5 cm² is pressed with force F₁ = 10 N. The force exerted on the large piston of area A₂ = 500 cm² is:
A.
1000 N
B.
100 N
C.
10 N
D.
10000 N
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ANSWER :
A. 1000 N