 MCQ Questions for Class 11 Physics Chapter 4 Motion in a Plane with Answers

# MCQ Questions for Class 11 Physics Chapter 4 Motion in a Plane with Answers

Check the below NCERT MCQ Questions for Class 11 Physics Chapter 4 Motion in a Plane with Answers Pdf free download. MCQ Questions for Class 11 Physics with Answers were prepared based on the latest exam pattern. We have provided Motion in a Plane Class 11 Physics MCQs Questions with Answers to help students understand the concept very well.

## Q1. The angular velocity depends upon the rate of change of the?

(a) Angular acceleration
(b) Angular Distance.
(c) Angular Displacement.
(d) torque

(c) Angular Displacement.

## Q2. 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

(d) total mechanical energy remains constant

(a) 440
(b) 420
(c) 430
(d) 450

(d) 450

(a) 7 m
(b) 1 m
(c) 5 m
(d) 1 . 2 m

(d) 1 . 2 m

## Q5. 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

<p(a) has an inward acceleration

## Q6. 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

(a) directed inwards from P, to the centre of the circle

## Q7. 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

a) Magnitude, direction, and addition, subtraction multiplication and division by vector laws

a) 4
b) 5
c) 3
d) 2

a) 4

a) polar vector
b) a scalar
c) a vector
d) None of these

a) polar vector

## Q10. A body is moving along a circular path with variable speed, it has

b) A tangential acceleration
c) Zero acceleration
d) Both radical and tangential acceleration

d) Both radical and tangential acceleration

## Q11. A body is traveling in a circle at a constant speed. It

a) has a constant velocity
b) has no acceleration
c) has an inward acceleration
d) has an outward radial acceleration

c) has an inward acceleration

## Q12. A car sometimes overturns while taking a turn. When it overturns, it is

a) The inner wheel which leaves the ground first
b) The outer wheel which leaves the ground first
c) both the wheel leave the ground simultaneously
d) Either inner wheel or the outer wheel leaves the ground

a) The inner wheel which leaves the ground first

## Q13. A particle is performing a U.C.M. Which is the wrong statement regarding its motion?

a) The velocity vector is tangential to the circle
b) The acceleration vector is tangential to the circle
c) The acceleration vector is directed towards the center of the circle
d) The velocity and acceleration vectors are perpendicular to each other

b) The acceleration vector is tangential to the circle

## Q14. A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle? The motion takes place in a plane. It follows that

a) its velocity is constant
b) its acceleration is constant
c) its motion is linear
d) its motion is circular

d) its motion is circular

## Q15. A stone is tied to one end of a string. Holding the other end, the string is whirled in a horizontal plane with progressively increasing speed. It breaks at some speed because

a) Gravitational forces of the earth are greater than the tension in the string.
b) The required centripetal force is greater than the tension sustained by the string.
c) The required centripetal force is less than the tension in the string.
d)The centripetal force is greater than the weight of the stone.

b) The required centripetal force is greater than the tension sustained by the string.

## Q16. In a vertical circle of radius r at what point in its path, a particle has a tension equal to zero?

a) Highest point
b) Lowest point
c) Any point
d) A horizontal point

a) Highest point

## Q17. For a particle performing a U.C.M. the acceleration is

a) constant in direction
b) constant in magnitude but not in the direction
c) constant in magnitude and direction
d) constant in neither magnitude nor in direction

b) constant in magnitude but not in the direction

## Q18. An airplane is taking a turn in a horizontal plane

a) its remains horizontal
b) it inclines inward
c) it inclines outward
d) its wings become vertical

b) it inclines inward

## Q19. When particle revolves with uniform speed on a circular path

a) no force acts on it
b) no acceleration acts on it
c) no work is done by it
d) its velocity is constant

c) no work is done by it

(a) 4 sec
(b) 10 sec
(c) 8 sec
(d) 1 sec

(a) 4 sec

## Q21. 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

(a) an angular acceleration is produced

## Q22. 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

(d) twice the time necessary to reach the maximum height

(a) Territory
(b) Treasury
(c) Tractor
(d) Trajectory

(d) Trajectory