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Terminal Velocity in Hindi. We covered all the Terminal Velocity in Hindi in this post for free so that you can practice well for the exam.
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Mock test on Terminal Velocity for Students
When raindrops of different sizes fall through air, which statement is correct?
a) The larger drop falls with greater speed
b) The smaller drop falls with greater speed
c) Both fall with the same speed
d) No conclusion can be made without knowing the exact sizes
Option a - The larger drop falls with greater speed
Once a body moving through a viscous medium reaches terminal velocity, what is its acceleration?
a) Zero
b) Positive
c) Negative
d) Dependent on other factors
Option a - Zero
A raindrop of radius r falls through air with terminal velocity v. The viscous force acting on it is F. If the radius becomes 2r and the drop again falls with terminal velocity in the same medium, what will be the new viscous force?
a) F/2
b) 4F
c) F
d) 8F
Option d - 8F
The terminal velocity of falling raindrops is attained mainly due to:
a) Upward buoyant force of air
b) Viscous resistance offered by air
c) Surface tension of water
d) Atmospheric air currents
Option b - Viscous resistance offered by air
If the diameter of ball Y is twice that of ball X, what is the ratio of their terminal velocities in water?
a) 1 : 2
b) 1 : 4
c) 2 : 1
d) 4 : 1
Option d - 4 : 1
Two spherical drops have radii in the ratio 1 : 2. What is the ratio of their terminal velocities?
a) 1 : 2
b) 1 : 4
c) 2 : 1
d) 4 : 1
Option b - 1 : 4
A metallic sphere of Mass m falls through glycerine with terminal speed v. If another sphere of the same material but Mass 8m is released in the same liquid, what will be its terminal velocity?
a) v
b) 6v
c) 4v
d) 8v
Option c - 4v
A lead ball of Mass M falls through a viscous liquid with terminal velocity v. What will be the terminal velocity of another lead ball of Mass 8M falling in the same liquid?
a) v
b) 8v
c) 4v
d) 64v
Option c - 4v
A Solid sphere falls through air with a terminal velocity of 10 m/s. If the same sphere falls in vacuum, what will happen?
a) Terminal velocity will be greater than 10 m/s
b) Terminal velocity will be less than 10 m/s
c) Terminal velocity will remain 10 m/s
d) There will be no terminal velocity
Option d - There will be no terminal velocity
A sphere is released from a great height into a viscous liquid. How does its velocity change with time?
a) It initially increases and then becomes constant
b) It initially decreases and then becomes constant
c) It remains constant throughout the motion
d) It first increases to a maximum value and then decreases
Option b - It initially decreases and then becomes constant
We covered all the terminal velocity in Hindi above in this post for free so that you can practice well for the exam.
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