ECAT Physics Circular Motion Entry Test Preparation

Online ECAT Physics Circular Motion Test Contain 10 MCQs. Click to Start Quiz Button.

Physics Circular Motion

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All questions contains Equal Point
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1. Answered
2. Review

1. Question 1 of 10

   1. Question

   2 points

   Radian is the unit of angular displacement which is?

   • Equal
   • Greater than degree
   • Less than degree
   • None of these
   Correct
   

   Incorrect
   
2. Question 2 of 10

   2. Question

   2 points

   The S.I. unit of angular displacement is

   • Degrees
   • Revolution
   • Radian
   • All of these
   Correct
   

   Incorrect
   
3. Question 3 of 10

   3. Question

   2 points

   Angle subtended at the center of the circle by a body is called?

   • Angular displacement
   • Angular velocity
   • Linear velocity
   • All of these
   Correct
   

   Incorrect
   
4. Question 4 of 10

   4. Question

   2 points

   When a body moves in a circle in the counter clockwise direction the angular displacement ∆Ѳ is taken as?

   • Positive
   • Negative
   • Both ways
   • None of these
   Correct
   

   Incorrect
   
5. Question 5 of 10

   5. Question

   2 points

   Average angular velocity of body rotating at angle of 30° during time interval 5 seconds will be

   • 6 rad/s
   • 7 rad/s
   • 8 rad/s
   • 10 rad/s
   Correct
   

   Incorrect
   
6. Question 6 of 10

   6. Question

   2 points

   Formula of angular momentum of moving body is

   • L = r/p
   • L = r.p
   • L = r*p
   • L = r + p
   Correct
   

   Incorrect
   
7. Question 7 of 10

   7. Question

   2 points

   One radian is equal to

   • 67.3
   • 57.3
   • 87.3
   • 60
   Correct
   

   Incorrect
   
8. Question 8 of 10

   8. Question

   2 points

   The direction of linear velocity of body moving in a circle is

   • along the axis of rotation
   • along the tangent
   • directed towards the center
   • directed away form the center
   Correct
   

   Incorrect
   
9. Question 9 of 10

   9. Question

   2 points

   When a body moves in a circle, the angle between its linear velocity and angular velocity is always

   • 180
   • 0
   • 90
   • 45
   Correct
   

   Incorrect
   
10. Question 10 of 10

    10. Question

    2 points

    One satellite covers longitude of earth up to

    • 110°
    • 120°
    • 150°
    • 180°
    Correct
    

    Incorrect
    

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Important Definitions

Angular Motion:

When a body moves in a circular path, or it rotates about an axis, then the motion is called angular motion.

Angular Displacement:

It is the angle subtended at the centre of the circle by a body while moving along the circumference in certain time.

Radian:

Radian is unit of angular displacement. It is the angle subtended at the centre of the circle by an arc such that length of the arc is equal to radius of the circle.

Angular Velocity:

Rate of change of angular displacement is called Angular velocity.

Angular Acceleration:

It is defined as rate of change of angular velocity.

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