IIT JEE Questions And Answers :: Gravitation: part1



IIT JEE : Gravitation QUESTIONS AND ANSWERS :: part1 : 1 to 5

Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2014 examinations :

1.If an artificial satellite is moving in a circular orbit around the earth with a speed equal to half the magnitude of the escape velocity from the earth, the height of the satellite above the surface of the earth is:

2R
R/2
R
R/4

2.The time period of a simple pendulum at the centre of earth is:

zero
infinite
less than zero
none of these

3.A satellite is orbiting very close to planet. Its time period depends only upon:

density of the planet
mass of the planet
radius of the planet
mass of the satellite

4.The minimum energy required to launch a m kg satellite from earths surface in a circular orbit at an altitude of 2R where R is the radius of earth, will be:

3mgR
5/6 mgR
2mgR
1/5mgR

5.If suddenly the gravitational force of attraction between earth and a satellite revolving around it becomes zero, then the satellite will:

continue to move in its orbit with same velocity
move tangentially to the original orbit with the same velocity
become stationary in its orbit
move towards the earth

More Gravitation QUESTIONS AND ANSWERS available in next pages

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