Home Physics Gravitation Motion of Satellite A satellite revolves around the earth in an …
Physics Gravitation Motion of Satellite Single Correct MCQ
Published on: September 12, 2026

A satellite revolves around the earth in an elliptical orbit. Its speed

A
Is the same at all points in the orbit
B
Is greatest when it is closest to the earth
C
Is greatest when it is farthest from the earth
D
Goes on increasing or decreasing continuously depending upon the mass of the satellite

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Text Solution

Verified by Experts
The correct answer is:
B
Step 1: Understand Kepler's laws of planetary motion, specifically the second law which states that a line segment joining a planet (or satellite) and the sun (or Earth) sweeps out equal areas during equal intervals of time.
Step 2: As the satellite moves closer to the Earth, the gravitational force increases, causing the satellite to accelerate. Hence, its speed increases.
Step 3: Conversely, when the satellite is farther from the Earth, the gravitational force is weaker, and the satellite moves more slowly.
Step 4: Therefore, the speed of the satellite is maximum at its closest point (perigee) and minimum at its farthest point (apogee).
Therefore, Option B is the correct answer.

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