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JEE PHYSICS MCQ: GRAVITATION
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Medium
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Understanding
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Every planet revolves around the sun in an elliptical
orbit:
A. The force acting on a planet is inversely
proportional to square of distance from sun.
B. Force acting on planet is inversely proportional
to product of the masses of the planet and the
sun.
C. The Centripetal force acting on the planet is
directed away from the sun.
D. The square of time period of revolution of
planet around sun is directly proportional to
cube of semi-major axis of elliptical orbit.
Choose the correct answer from the options given
below:
orbit:
A. The force acting on a planet is inversely
proportional to square of distance from sun.
B. Force acting on planet is inversely proportional
to product of the masses of the planet and the
sun.
C. The Centripetal force acting on the planet is
directed away from the sun.
D. The square of time period of revolution of
planet around sun is directly proportional to
cube of semi-major axis of elliptical orbit.
Choose the correct answer from the options given
below:
View answer and explanation
Correct option: D
A and D only
Option D (A and D only) is correct because Kepler's laws state that the force is inversely proportional to the square of the distance and the square of the period is proportional to the cube of the semi-major axis.
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