Gravitation QUESTIONS AND ANSWERS

IIT JEE : Gravitation QUESTIONS AND ANSWERS :: part2 : 16 to 20

Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :

16.Two of Jupiter s moons have orbit radii which differ by a factor of 2. Their periods differ by

2.8

4.2

17.The energy required to shift a satellite from orbital radius r to orbital radius 2r is E. What energy will be required to shift the satellite from orbital radius 2r to orbital radius 3r ?

E / 2

E / 3

E / 4

18.A satellite of mass m is revolving at a height R above the surface of Earth. Here R is the radius of the Earth. Th gravitational potential energy of this satellite is

-mgR

-mgR / 2

-mgR / 3

-mgr / 7.

19.Given : R = radius of Earth. What is the approximate distance of a geostationary satellite from the centre of Earth ? [Note that the satellite is above the equator.]