MCQ Torque, Class 11 Physics

1. There will be total 10 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying

1. A stone of mass m tied to a string of length l is rotating along a circular path with constant speed v. The torque on the stone is
A. Zero
B. mvl
C.D.

A

B

C

D

Your comments:

Question 1 of 10

2. An engine develops a power of 360 kw, when rotating at 30 revolutions per second. The Torque required to deliver this power is

191.08 Nm

19108 Nm

1910.8 Nm

19.108 Nm

Your comments:

Question 2 of 10

3. The dimension of are

A

B

C

D

Your comments:

Question 3 of 10

4. Which of the following is an axial vector?

Torque

Acceleration

Force

None of these

Your comments:

Question 4 of 10

5. Moment of inertia of a solid sphere of mass M and radius R is ______

MR²

2/5MR²

2/3 MR²

1/2MR²

Your comments:

Question 5 of 10

6. A wheel having moment of inertia 3.5 kgm² rotates about the vertical axis. The torque required to produce an angular acceleration of 25rad/s² in the wheel is

8.45Nm

85Nm

88.5Nm

87.5Nm

Your comments:

Question 6 of 10

7. For a system to be in equilibrium, the net torques acting on it must balance. This is true only if the torque are taken about

any point on the system

The centre of the system.

The centre of mass of system.

None of these

Your comments:

Question 7 of 10

8. The rotational analog to the expression F = ma in linear motion is ___________in rotational motion.

A

B

C

D

Your comments:

Question 8 of 10

9. Rotational analogue of force of linear motion is

Torque

Angular momentum

Weight

Moment of inertia

Your comments:

Question 9 of 10

10. When no external Torque acts on a system, what is conserved

Energy

Force

Angular momentum

Linear momentum

Your comments:

Question 10 of 10

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