Gravitation – Online MCQs Test – Physics 9th

1. Near Earth’s surface g = _____________

2. The time required for a satellite or complete one revolution around the Earth in its orbit is called its:

3. A communication satellite completes its one revolution around the Earth in hours

4. The gravitational pull of the Earth on the satellite provides the _________ needed to keep a satellite in orbit around some planet.

5. According to Newton’s law of universal gravitation, force ∝ to ___________

6. __________ is a natural satellite.

7. It changes the path of the Moon around the Earth.

8. Numerical value of _______________ remains constant everywhere.

9. Mass of the Earth is ___________

10. In 1798, he completed the 1^st experiment that demonstrated Newton’s Law of universal gravitation.

11. The height of a geostationary satellite is about km from the surface of the Earth.

12. Earth’s field force is a:

13. ___________ was the first scientist who gave the concept of gravitation.

14. Your weight as measured on Earth will be _________ on the Moon.

15. According to Newton’s law of universal gravitation, force ∝ ____________

16. The constant horizontal velocity required to put the satellite into a stable circular orbit around the Earth is called:

17. ____________ are used to put satellites into orbits.

18. According to Newton’s law of universal gravitation, force is inversely proportional to ____.

19.

20. Sun’s gravitational attraction to the Earth is ________ times greater than that of the moon to the Earth.