Centre of Mass MCQs : This section focuses on the "Centre of Mass" in Physics Class 11. These Multiple Choice Questions (MCQs) should be practiced to improve the Physics Class 11 skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
____________ a point at which whole of the mass of the body or all the masses of a system of particle appeared to be concentrated.
A. Mass
B. Center of Mass
C. Virtue of Mass
D. Simple Mass
Question 2
For simple rigid objects with uniform density, the center of mass is located at the ____________.
A. left
B. right
C. bottom
D. centroid
Question 3
Example of simple rigid objects with uniform density is?
A. ring
B. uniform disc
C. Both A and B
D. None of the above
Question 4
The term system of particles means a well-defined collection of a large number of particles that may or may not interact with each other or connected to each other.
A. TRUE
B. FALSE
C. Can be true or false
D. Can not say
Question 5
For which of the following does the centre of mass lie outside the body?
A. Pen
B. Dice
C. Rectangular tile
D. Bangle
Question 6
The centre of masses of two particles with masses 2 kg and 1 kg located at (1,0,1) and (2,2,0) is located at _____
A. 2/3, 4/3, 2/3
B. 4/3, 2/3, 2/3
C. 2/3, 2/3, 4/3
D. 1/3, 2/3, 2/3
Question 7
The centre of mass of the body always lies on the line of symmetry for an object with uniform density.
A. TRUE
B. FALSE
C. Can be true or false
D. Can not say
Question 8
Three identical spheres each of radius R are placed such that their centres lie on a straight line. What is the location of their centre of mass from the centre of the first sphere?
A. R
B. 3R
C. 2R
D. 4R
Question 9
Two bodies of masses 5kg and 15kg are located in the cartesian plane at (1,0) and (0,1). What is the location of their centre of mass?
A. 1/4, 1/4
B. 3/4, 3/4
C. 3/4, 1/4
D. 1/4, 3/4
Question 10
External force means a force which is acting on any one of particle which is included in the system by some other body outside the system.
A. Yes
B. No
C. Can be yes or no
D. Can not say