IIT JEE : Gravitation QUESTIONS AND ANSWERS :: part1 : 21 to 25
Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :
21.The time period of artificial satellite in a circular orbit of radius R is T. The radius of the orbit in which time period is 8T is: |
2R |
3R |
4R |
5R |
22.If earth were to rotate faster than its present speed, the weight of an object will: |
increase at the equator but remain unchanged at poles |
decrease at the equator but remain unchanged at the poles |
remain unchanged at the equator but decrease at the poles |
remain unchanged at the equator but increase at the poles |
23.If the earth stops rotating about its axis, the acceleration due to gravity will remain unchanged at: |
equator |
latitude 45 degree |
latitude 60 degree |
poles |
24.A point mass of 10 kg is placed at the centre of earth. The weight of the point mass is: |
zero |
98 N |
49 N |
none of these |
25.A satellite S is moving in an elliptical orbit around the earth. The mass of the satellite is very small compared to the mass of the earth: |
the acceleration of S is always directed towards the centre of the earth |
the angular momentum of S about the centre of the earth changes in direction but its magnitude remains constant |
the total mechanical energy of S varies periodically with time |
the linear momentum of S remains constant in the magnitude |
More Gravitation QUESTIONS AND ANSWERS available in next pages
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