Chapter 7 Circular Motion _ Test 1

1. Motion of planets around earth is the example of circular motion

1) True
2) False
2. In a circular motion a force in the direction of motion of body acts constantly

1) False
2) True
3. Centripetal force varies directly with the square of velocity

1) False
2) True
4. For every action there is an equal and same reaction

1) True
2) False
5. Dryer of washing machine is an application of centripetal force.

1) True
2) False
6. Greater the speed while moving on a circular path the less you have to bend towards the center

1) True
2) False
7. Force of gravitation is directly proportional to the product of masses of two bodies

1) True
2) False
8. Mass of earth can be determined with the help of Ist law of motion

1) False
2) True
9. In \S.I units the value of gravitational constant is 6.67 x 10-11 Nm2/kg2.

1) True
2) False
10. The average density of earth is approximately equals to 5500 g/cm3

1) True
2) False
11. Value of g is greater on mountain than on seashore

1) True
2) False
12. Moon is a natural satellite of our earth

1) True
2) False
13. Newton has predicted about the artificial satellites 300 years ago

1) False
2) True
14. A cyclist bends himself towards the outside of curved path while taking turn

1) True
2) False
15. The value of g at the surface of earth is g= GM/R2

1) False
2) True
This is more feedback!
This is the feedback!