Which of the following statements is correct/incorrect? a. If a planet of given

Question

Which of the following statements is correct/incorrect? a. If a planet of given density is made smaller, its force of attraction for an object on its surface increases. b. The orbital speed around the sun is larger for Mars than it is for Saturn. c. Consider a rocket engine which provides a constant acceleration. The engine-on time required to escape from the moon is smaller than the engine-on time required to escape the earth. d. The angular speed around the sun is smaller for Mars than it is for Saturn. e. The rotation period around the sun is smaller for Mars than it is for Saturn. f. As measured by an observer on earth, there is no difference in the periods of two satellites, each in the same circular orbit in the equatorial plane around the earth, but one moving eastward and the other westward. g. A satellite can coast in a stable orbit in a plane not passing through the center of the earth.

Explanation / Answer

a c f are incorrect rest are corect

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