CBSE Class 11 Physics Motion in a Plane Quiz 1

1. The angular velocity depends upon the rate of change of the?

A Angular acceleration B Angular Distance. C Angular Displacement. D torque

2. A small body attached at the end of an inextensible string completes a vertical circle, then its

A angular momentum remains constant B linear momentum remains constant C angular velocity remains constant D total mechanical energy remains constant

3. A cyclist goes round a circular path of circumference 343 m in s. The angle made by him, with the vertical is

A 440 B 420 C 430 D 450

4. A body makes a displacement of 4 m due East from a point O and then makes displacement of 3 m due North. Its resultant displacement from O

A 7 m B 1 m C 5 m D 1 . 2 m

5. A body is traveling in a circle at constant speed. It

A has an inward acceleration B has constant velocity. C has no acceleration D has an outward radial acceleration

6. When a body P moves on a circular path, the centripetal acceleration is

A directed inwards from P, to the centre of the circle B directed tangential to the circumference of the circle, at P C directed perpendicular to the planc of the circle, at P D directed outward, perpendicular to the circumference of the circle

7. A coin kept on a rotating gramophone disc just begins to slip if its centre is at a distance of 8 cm from the centre of the disc. The angular velocity of the gramophone disc is then doubled. Through what distance, the coin should be shifted towards the centre, so that the coin will just slip?

A 2 cm B 6 cm C 16 cm D 4 cm

8. A can filled with water is revolved in a vertical circle of radius 4 metre and the water does not fall down. The time period of revolution will be

A 4 sec B 10 sec C 8 sec D 1 sec

9. When angular velocity changes with respect to time then?

A an angular acceleration is produced B a linear acceleration is produced C it constitute a couple D a linear velocity is produced

10. The total flight requires a time that is?

A four times the time necessary to reach the maximum height. B thrice the time necessary to reach the maximum height C equal to the time necessary to reach the maximum height. D twice the time necessary to reach the maximum height