Terminal Velocity NEET Questions

Physics - Properties of Solids and Liquids

Terminal Velocity MCQ Questions


13.
The terminal velocity of a droplet in air is generally:
A.
Dependent only on temperature
B.
Very high
C.
Independent of its size
D.
Very low due to high air resistance
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ANSWER :
D. Very low due to high air resistance
14.
How does temperature affect the viscosity of a fluid and hence the terminal velocity?
A.
It only affects gases
B.
Increasing temperature increases viscosity, decreasing terminal velocity
C.
Temperature has no effect
D.
Increasing temperature decreases viscosity, increasing terminal velocity
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ANSWER :
D. Increasing temperature decreases viscosity, increasing terminal velocity
15.
The drag force experienced by an object moving through a fluid is:
A.
Proportional to the velocity in laminar flow
B.
Independent of the velocity
C.
Inversely proportional to the velocity
D.
Dependent only on the fluid's density
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ANSWER :
A. Proportional to the velocity in laminar flow
16.
Which law is used to calculate the viscous force on a sphere moving through a fluid?
A.
Stokes' law
B.
Bernoulli’s principle
C.
Pascal’s law
D.
Boyle’s law
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ANSWER :
A. Stokes' law
17.
The terminal velocity of a raindrop is reached when:
A.
The force of gravity is balanced by air resistance
B.
The raindrop evaporates
C.
The raindrop accelerates indefinitely
D.
The surface tension equals the buoyant force
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ANSWER :
A. The force of gravity is balanced by air resistance
18.
Which of the following is true at terminal velocity?
A.
Net force on the object is zero
B.
The object is accelerating
C.
The drag force is zero
D.
The gravitational force is zero
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ANSWER :
A. Net force on the object is zero