Terminal Velocity in Hindi

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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

Small and large raindrops are falling through the air :

(A) the large drop moves faster

(B) the small drop moves faster

(C) both move at the same speed

(D) no conclusion can be drawn unless the exact sizes of the drops are known

Option a - the large drop moves faster

When the terminal velocity is reached, the acceleration of a body moving through a viscous medium is :

(A) zero

(B) positive

(C) negative

(D) depends upon other factors

Option a - zero

A raindrop of radius r has a terminal velocity v m/s in the air the viscosity of air is n poise. The viscous force on it is F. If the radius of the drop is 2r and the drop falls with terminal velocity in the same air, the viscous force on it will be :

(A) F/2

(B) 4F

(C) F

(D) 8F

Option d - 8F

The viscosity of falling raindrops attains limiting value because of :

(A) upthrust of air

(B) the viscous force exerted by air

(C) surface tension

(D) air currents in the atmosphere

Option b - the viscous force exerted by air

The diameter of ball y is double that of x. The ratio of their terminal velocities inside the water will be :

(A) 1 : 2

(B) 1 : 4

(C) 2 : 1

(D) 4 : 1

Option d - 4 : 1

The ratio of radii of two spherical drops is 1 : 2. The ratio of terminal velocities of these drops will be :

(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 a terminal velocity of v. If we drop a ball of mass 8m of the same metal into a column of glycerine, the terminal velocity of the ball will be :

(A) v

(B) 6v

(C) 4v

(D) 8v

Option c - 4v

The mass of a lead ball is M. It falls down in a viscous liquid with terminal velocity v. The terminal velocity of another lead ball of mass 8 m in the same liquid will be :

(A) v

(B) 8v

(C) 4v

(D) 64 v

Option c - 4v

A solid sphere falls with a terminal velocity of 10 m/s in air. If it is allowed to fall in a vacuum :

(A) terminal velocity will be more than 10 m/s

(B) terminal velocity will be less than 10 m/s

(C) terminal velocity will be 10 m/s

(D) there will be no terminal velocity

Option d - there will be no terminal velocity

A sphere is dropped from a great height in a viscous liquid. Then the velocity :

(A) first increases and becomes constant

(B) first decreases and becomes constant

(C) remains constant throughout

(D) first increases become maximum and then decreases

Option b - first decreases and 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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