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

Do you need some help in preparing for your upcoming Class 11 Physics exams? We’ve compiled a list of MCQ on Motion in a Plane Class 11 MCQs Questions with Answers to get you started with the subject. You can download NCERT MCQ Questions for Class 11 Physics Chapter 4 Motion in a Plane with Answers Pdf free download, and learn how smart students prepare well ahead with MCQ Questions for Class 11 Physics with Answers.

## Motion in a Plane Class 11 MCQs Questions with Answers

Solving the Motion in a Plane Multiple Choice Questions of Class 11 Physics Chapter 4 MCQ can help you understand the concepts better.

Question 1.
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

Question 2.
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

Question 3.
A car is moving on a circular path and takes a turn. If R1 and R² are the reactions on the inner and outer wheels respectively, then
(a) R1 = >R²
(b) R1 = R²
(c) R1 < R²
(d) R1 > R²

Question 4.
The angle between centripetal acceleration and tangential acceleration is?
(a) 180°
(b) 0°
(c) 90°
(d) 45°

Question 5.
Large angle produces?
(a) high trajectory
(b) curve trajectory
(c) flat trajectory
(d) straight trajectory

Question 6.
He dimensional formula for normal acceleration is
(a) LT-1
(b) L2T2
(c) L3T-2
(d) LT-2

Question 7.
A book is pushed with an initial horizontal velocity of 5.0 meters per second off the top of a desk. What is the initial vertical velocity of the book?
(a) 10. m/s
(b) 0 m/s
(c) 50 m/s
(d) 2.5 m/s

Question 8.
One radian is defined to be the angle subtended where the arc length S is exactly equal to the?
(b) diameter of the circle.
(c) circumference of the circle.
(d) half of radius of the circle.

Question 9.
A body travels along the circumference of a circle of radius 2 m with a linear velocity of 6 m/s. Then its angular velocity is

Question 10.
One° (1°) is equal to?

Question 11.
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

Question 12.
A body is allowed to slide on a frictional less track from rest under-gravity. The track ends in a circular loop of diameter D. What should be the minimum height of the body in terms of D, so that it may successfully complete the loop?
(a) D
(b) 4/5 D
(c) 5/4 D
(d) 2D

Question 13.
(a) 57.7°
(b) 53.7°
(c) 59.3°
(d) 57.3°

Question 14.
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

Answer: (d) total mechanical energy remains constant

Question 15.
A body gose round the circumference of a circle of radius 2 m with an angular velocity of 2 rad/s. Its centripetal acceleration is
(a) 3 m/s²
(b) 1 . 5 m/s²
(c) 6 m/s²
(d) 12 m/s²

Question 16.
A book is pushed with an initial horizontal velocity of 5.0 meters per second off the top of a desk. What is the initial vertical velocity of the book?
(a) 10. m/s
(b) 0 m/s
(c) 50 m/s
(d) 2.5 m/s

Question 17.
Which is a constant for a freely falling object?
(a) displacement
(b) velocity
(c) acceleration
(d) speed

Question 18.
The tangential component and centripetal component of acceleration are?
(a) Similar to each other
(b) Parallel to each other.
(c) Equal to each other.
(d) Perpendicular to each other.

Answer: (d) Perpendicular to each other.

Question 19.
A body travels along the circumference of a circle of radius 2 m with a linear velocity of 4 m/s. Its centripetal acceleration is
(a) 8 m/s²
(b) 16 m/s²
(c) 10 m/s²
(d) 4 m/s²

Question 20.
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 acceleration is constant
(b) its motion is circular
(c) its velocity is constant
(d) its motion is linear