IIT JEE Questions And Answers :: Gravitation: part4



IIT JEE : Gravitation QUESTIONS AND ANSWERS :: part4 : 1 to 5

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

1.A communication satellite is put in an orbit around the Earth. What is the approximate time taken by a radiowave to go to the satellite and come back to the Earth ?

1 / 4 s
1 / 8 s
1 s
12 s

2.A uniform spherical shell gradually shrinks maintaining its shape. The gravitational potential at the centre

increases
decreases
remains constant
oscillates

3.The kinetic energy needed to project a body of mass m from the Earth s surface to infinity is

1 / 4 mgR
1 / 2 mgR
mgR
2mgR

4.The gravitational potential difference between the surface of a planet and a point 20 m above the surface, is 2 joule/kg. If the gravitational field is uniform, then the work done in carrying a 5 kg body to a height of 4 m above the surface is

2 J
20 J
40 J
10 J

5.A missile which missed its target went into orbit around the Earth at a mean radius 4 times as great as the parking orbit of a satellite. The period of the missile is

4 days
8 days
16 days
64 days

More Gravitation QUESTIONS AND ANSWERS available in next pages

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