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Class 11 Physics Practice Test: Gravitation - Earth Satellites
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Earth satellite, also called artificial satellite, artificial object launched into a temporary or permanent orbit around Earth.

Class 11 Physics Practice Test: Gravitation - Earth Satellites
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19 Questions

1. The time period of a satellite depends on _____
2. The radius of a planet is “R” and mass is “M”. A satellite revolves around it in an orbital radius of “r” and an orbital velocity “v”. How would you express the acceleration due to gravity on the surface of the planet?
3. The radius of a planet is “R” and mass is “M”. A satellite revolves around it in an orbital radius of “r” and an orbital velocity “v”. How would you express the acceleration due to gravity on the surface of the planet?
4. The time period of a satellite is independent of the mass of the satellite.
5. Consider two satellites A and B. Both move around the earth in the same orbit but the mass of B is twice that of the mass of A.
6. A satellite is launched into a circular orbit of radius R while a second satellite is launched into an orbit of radius 1.02R. What is the percentage change in the time periods of the two satellites?
7. A satellite revolves around a planet of radius “Q”. If the angular velocity of the satellite is “w” and the radius of the orbit is “4nQ”, where “n” is an integer, what is the acceleration due to gravity on the surface of the planet?
8. A satellite is revolving very close to a planet of density D. What is the time period of that satellite?
9. Consider 2 satellites A and B having time periods 16 hours and 1 hour, respectively. What is the ratio of the radius of their orbits?
10. The orbital velocity of a satellite orbiting the earth is half the escape velocity of the earth. What is the height above the surface of the earth at which it is orbiting? (Let the radius of the earth (R) = 6400 km).
11. A satellite is revolving very close to a planet of density D. What is the time period of that satellite?
12. A satellite of mass “m” revolves around a planet at a height as shown in the figure. If “g” is the acceleration due to gravity on the surface of the planet, what is the orbital velocity of the satellite?
13. A satellite orbits the earth at a height of R/5. What is its orbital speed?
14. A satellite is seen after every 8 hours. If it rotates opposite to that of the earth, what is its angular velocity about the centre of the earth? Assume the earth is perfectly spherical and the satellite is in the equatorial plane.
15. The orbital velocity of a satellite orbiting a planet of mass “M” and radius “R” at a height as shown is [(G*M)/(R+h)].
16. The time period of a satellite of earth is 90 minutes. If the separation between the earth and the satellite is quadrupled, the new time period will be _____________
17. The only natural satellite of India is the moon.
18. Consider 2 satellites A and B having time periods 16 hours and 1 hour, respectively. What is the ratio of the radius of their orbits?
19. The satellites orbiting the earth, eventually fall to the earth when they are left unsupervised or unattended because _____

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