Gravitation class 11 MCQ

Last updated on July 27th, 2023 at 10:14 am

6. To have an earth synchronous satellite it should be launched at the proper height moving from

(a) north to south in a polar plane

(b) east to west in an equatorial plane

(d) west to east in an equatorial plane

7. A missile is launched with a velocity less than escape velocity. The sum of its kinetic and potential energies is

(a) zero

(b) negative

(d) may be positive, negative or zero.

(b) negative

8. The orbital speed of Jupiter is

(a) greater than the orbital speed of the earth

(b) less than the orbital speed of the earth

(d) zero

(b) less than the orbital speed of earth

9. The total energy of a circularly orbiting satellite is

(a) twice the kinetic energy of the satellite

(b) half the kinetic energy of the satellite

(d) half the potential energy of the satellite

10. Geo-stationary satellite is one which

(a) remains stationary at a fixed height from the earth’s surface

(b) revolves like other satellites but in the opposite direction of earth’s rotation

(c) revolves around the earth at a suitable height with the same angular velocity and in the same direction as the earth does about its own axis

(d) None of these

(c) revolves round the earth at a suitable height with same angular velocity and in the same direction as earth does about its own axis

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