Angular Momentum in Hindi

Angular Momentum in Hindi. We covered all the Angular Momentum in Hindi in this post for free so that you can practice well for the exam.

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Mock Test on Angular Momentum for Students

A wheel of the moment of inertia 5 kg m² rotates at the rate of 600 rpm: it is coupled with another wheel of the moment of inertia 10 kg m² which is initially at rest. Find the number of revolutions per minute of the coupled system :

(A) 100 rpm

(B) 200 rpm

(C) 300 rpm

(D) 400 rpm

Show Answer

If the angular velocity of a body is doubled then the ratio of its angular momentum is :

(A) 1 : 2

(B) 1 : 4

(C) 1 : 8

(D) 2 : 1

Show Answer

A pan containing a layer of uniform thickness of ice is placed on a circular turntable with its center coinciding with the center of the turntable. The turntable is now rotated at a constant angular velocity about a vertical axis passing through its center and driving torque is withdrawn. There is no friction between the table and the pivot. As the ice melts :

(A) The angular velocity decreases

(B) The angular velocity increases

(C) The angular velocity remains unchanged

(D) The moment of inertia remains unchanged

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A mass is rotating in a plane about a fixed point. Its angular momentum is directed along

(A) The radius

(B) The tangent in the orbit

(C) A line perpendicular to the plane of rotation

(D) A line parallel to the plane of rotation

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A boy comes running and sits on a merry-go-round. What is conserved?

(A) Linear momentum

(B) Kinetic energy

(C) Angular momentum

(D) Velocity

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A swimmer while jumping into the water from a height, easily forms a loop in the air so as to :

(A) Decrease M.I. and increase angular speed

(B) Decrease M.I. and decrease angular speed

(C) Increase M.I. and increase angular speed

(D) Increase M. I and decrease angular speed

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Angular momentum is :

(A) a Polar vector

(B) An axial vector

(C) A scalar

(D) A Tensor

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In the absence of external torque on a system, which of the following will not change?

(A) Linear momentum

(B) Angular momentum

(C) Both linear momentum and angular momentum

(D) Force

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The moment of momentum is called :

(A) Couple

(B) Torques

(C) Impulse

(D) Angular momentum

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The direction of angular momentum of the rotating body in the vertical plane is :

(A) Vertical

(B) Horizontal

(C) Tangential

(D) Radial

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When the mass is rotating in a plane about a fixed point. Its angular momentum is directed along

(A) The radius

(B) The tangent to orbit

(C) the Line at an angle of 45° to the plane of rotation

(D) The axis of rotation

Show Answer

If a student, sitting on a rotating table, with his arms outstretched, suddenly lowers his hands then his :

(A) Angular velocity decreases

(B) Moment of inertia decreases

(C) Angular velocity remains constant

(D) Angular momentum increases

Show Answer

We covered all the angular momentum in Hindi above in this post for free so that you can practice well for the exam.

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