Circular Motion, Class 11 Physics NCERT Solutions

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 5 kg is attached to a string of 10 m length and is whirled in a horizontal circle. The string can withstand a maximum tension of 160 N. The maximum velocity of revolution that can be given to the stone without breaking the string is

17.88 m/s

16 m/s

20 m/s

19.4 m/s

Your comments:

Question 1 of 10

2. The acceleration of the particle performing uniform circular motion is

A

B

C

D

Your comments:

Question 2 of 10

3. It is advised to drive along the slippery road slowly, because:

Normal reaction gets reduced

advice is not correct

water on the road opposes the motion

Friction is reduced

Your comments:

Question 3 of 10

4. Centripetal force always acts at 90 degrees to the velocity, and away from the centre of the circle.

True

can’t predict

False

none of the above

Your comments:

Question 4 of 10

5. Railway tracks are banked at the curves so that the necessary centripetal force may be obtained from the horizontal component of the reaction on the train.

True

False

can't predict

none of the above

Your comments:

Question 5 of 10

6. Which of the following is called a fictitious force?

Gravitational force

Frictional force

Centrifugal force

Centripetal force

Your comments:

Question 6 of 10

7. At which place of the earth, the centripetal force is maximum

At the earth surface

At the equator

At the north pole

At the south pole

Your comments:

Question 7 of 10

8. The maximum speed at which a car can turn round a curve of 400 m radius on a level road is: (Given: coefficient of friction between the tyres and road is 0.1, and g = 10 m/s²)

20 m/s

14 m/s

26 m/s

21 m/s

Your comments:

Question 8 of 10

9. The angle through which the outer edge is raised above the inner edge is called

angle of inclination

angle of repose

angle of banking

angle of declination

Your comments:

Question 9 of 10

10. A model aeroplane is tethered to a post and held by a fine line. It flies in a horizontal circle. Then the line breaks. What direction will it fly in?

In a circular path, as before

Directly to the centre of the circle

In a straight line at a tangent

Directly to the centre of the circle.

Your comments:

Question 10 of 10

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