NCERT Class 11 Chapter 4 Physics Motion in a Plane MCQ

NCERT Class 11 Chapter 4 Physics Motion in a Plane MCQ | Questions & Answers: Attempt the NCERT Class 11 Chapter 4 Physics Motion in a Plane MCQ Quiz that we have provided here and at last know the score you have got after you submit your quiz.

Page 1 of 3

1. Which of the following conditions are sufficient and essential for a quantity to be a vector?

A. Magnitude, direction, and addition, subtraction multiplication and division by vector laws

B. Magnitude, direction and combination of vectors by ordinary rules of algebra

C. Magnitude and addition, subtraction, multiplication by ordinary rules of algebra

D. Magnitude and direction

2. How many minimum number of vectors in different planes can be added to give zero resultant?

A. 4

B. 5

C. 3

D. 2

CBSE class 11 physics Motion in a plane (3 Q)

A. (a)

B. (b)

C. (c)

D. (d)

CBSE Class 11 physics Motion in a plane (4 Q)

A. (a)

B. (b)

C. (c)

D. (d)

A. 45°

B. 180°

C. 0°

D. 90°

6. Acceleration due to gravity

A. polar vector

B. a scalar

C. a vector

D. None of these

7. The resultant of A × 0 will be equal to

A. zero vector

B. zero

C. A

D. unit vector

CBSE Class 11 physics motion in a plane (8Q)

A. (a)

B. (b)

C. (c)

D. (d)

9. Two vectors A and B lie in a plane, a third vector C lies outside this plane, the sum of these vectors A + B + C (a) can be zero

A. can never be zero

B. can be zero

C. Both

D. None of these

10.

A. (a)

B. (b)

C. (c)

D. (d)

Page 2 of 3

11.

A. 10 t

B. 5 t

C. 3 t

D. 2 t

12. For motion in two or three dimensions, the angle between velocity and acceleration is

A. Any angle between 0° & 180°

B. 180°

C. 90°

D. 0°

13. A particle moves in a plane with a constant acceleration in a direction different from the initial velocity. The path of the particle is a/an

A. parabola

B. straight line

C. arc of a circle

D. ellipse

14. The shape of trajectory of the motion of an object is determined by

A. All of these

B. initial position

C. acceleration

D. initial velocity

15. In the projectile motion, if air resistance is ignored, the horizontal motion is at

A. constant velocity

B. constant retardation

C. constant acceleration

D. variable acceleration

16. A bullet is dropped from the same height when another bullet is fired horizontally. They will hit the ground

A. simultaneously

B. depends on the observer

C. None of these

D. one after the other

17. A boat crosses a river with a velocity of 8 km/h. If the resulting velocity of boat is 10 km/h then the velocity of river water is

A. 6 km/h

B. 8 km/h

C.10 km/h

D. 4 km/h

18. A moves with 65 km/h while B is coming back of A with 80 km/h. The relative velocity of B with respect to A is

A. 15 km/h

B. 145 km/h

C. 60 km/h

D. 80 km/h

19. Centripetal acceleration is

A. not a constant vector

B. a magnitude changing vector

C. a constant scalar

D. a constant vector

20. The direction of the angular velocity vector is along

A. the axis of rotation

B. the outward radius

C. the inward radius

D. the tangent to the circular path

Page 3 of 3

21. A body of mass 500 gram is rotating in a vertical circle of radius 1 m. What is the difference in its kinetic energies at the top and the bottom of the circle?

A. 4.9 J

B. 19.8 J

C. 2.8 J

D. 9.8 J

22. A particle has a displacement of 2 units along the x -axis, 1 unit along the y – axis and 2 units along the z – axis. Then the resultant displacement of the particle is

A. 3 units

B. 5 units

C. 4 units

D. 1 units

23. The angle between centripetal acceleration and tangential acceleration is?

A. 180°

B. 0°

C. 90°

D. 45°

24. Large angle produces?

A. high trajectory

B. curve trajectory

C. flat trajectory

D. straight trajectory

25. He dimensional formula for normal acceleration is

A. LT^-1

B. L2T2

C. L3T^-2

D. LT^-2