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 with a moment of inertia of 5 kg m² rotates at 600 rpm. It is then coupled with another wheel having a moment of inertia of 10 kg m², initially at rest. What will be the rotational speed of the combined system?

a) 100 rpm

b) 200 rpm

c) 300 rpm

d) 400 rpm

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If the angular speed of a rotating body is doubled, how does its angular momentum change?

a) 1 : 2

b) 1 : 4

c) 1 : 8

d) 2 : 1

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A pan containing a uniform layer of ice is placed on a circular turntable, with both centers coinciding. The turntable is SET into rotation with a constant angular speed, after which the driving torque is removed. There is no friction at the pivot. As the ice gradually melts, what happens?

a) Angular speed decreases

b) Angular speed increases

c) Angular speed remains constant

d) Moment of inertia remains constant

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A body rotates in a plane about a fixed point. In which direction is its angular momentum directed?

a) Along the radius

b) Along the tangent to the path

c) Perpendicular to the plane of rotation

d) Parallel to the plane of rotation

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A boy runs and jumps onto a rotating merry-go-round. Which physical quantity is conserved in this process?

a) Linear momentum

b) Kinetic energy

c) Angular momentum

d) Velocity

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While diving into water from a height, a swimmer curls his body into a loop while in the air. This action helps to:

a) Reduce moment of inertia and increase angular speed

b) Reduce moment of inertia and reduce angular speed

c) Increase moment of inertia and increase angular speed

d) Increase moment of inertia and reduce angular speed

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Angular momentum is classified as which type of quantity?

a) Polar Vector

b) Axial Vector

c) Scalar

d) Tensor

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If no external torque acts on a system, which quantity remains unchanged?

a) Linear momentum

b) Angular momentum

c) Both linear and angular momentum

d) force

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The quantity referred to as the moment of momentum is known as:

a) Couple

b) Torque

c) Impulse

d) Angular momentum

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For a body rotating in a vertical plane, the direction of its angular momentum is:

a) Vertical

b) Horizontal

c) Tangential

d) Radial

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When a Mass rotates in a plane about a fixed point, the direction of its angular momentum is along:

a) The radius

b) The tangent to the path

c) A line inclined at 45° to the plane of rotation

d) The axis of rotation

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A student sits on a rotating platform with arms stretched outward. If he suddenly pulls his arms inward, which of the following changes?

a) Angular speed decreases

b) Moment of inertia decreases

c) Angular speed 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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Also, check out:

• Modern Physics Class 12 MCQ
• MCQs on Modern Physics
• Modern Physics MCQ for NEET