Kepler’s Law of Planetary Motion NEET Questions

Physics - Gravitation

Kepler’s Law of Planetary Motion MCQ Questions


1.
Which of the following best describes Kepler’s First Law of Planetary Motion?
A.
Planets move in circular orbits
B.
Planets move in elliptical orbits with the Sun at one focus
C.
Planets move in parabolic orbits
D.
Planets move in hyperbolic orbits
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ANSWER :
B. Planets move in elliptical orbits with the Sun at one focus
2.
Which of the following statements about Kepler’s laws is incorrect?

NEET - 2021

A.
Kepler’s laws apply to all celestial bodies
B.
Kepler’s second law implies planets move faster when closer to the Sun
C.
Kepler’s third law relates the square of the orbital period to the cube of the semi-major axis
D.
Kepler’s laws are a consequence of Newton’s laws
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ANSWER :
A. Kepler’s laws apply to all celestial bodies
3.
According to Kepler’s Second Law, a planet sweeps out equal areas in:
A.
Equal distances
B.
Equal times
C.
Unequal times
D.
Proportional to its speed
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ANSWER :
B. Equal times
4.
Kepler’s Third Law relates which two quantities of a planet’s orbit?
A.
Orbital period and orbital speed
B.
Orbital period and distance from the Sun
C.
Orbital speed and distance from the Sun
D.
Orbital period and mass of the planet
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ANSWER :
B. Orbital period and distance from the Sun
5.
Which of the following remains conserved for a planet orbiting the Sun according to Kepler's laws?
A.
Linear momentum
B.
Kinetic energy
C.
Angular momentum
D.
Potential energy
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ANSWER :
C. Angular momentum
6.
According to Kepler’s Second Law, when a planet is closer to the Sun, its speed:
A.
Increases
B.
Decreases
C.
Remains constant
D.
Becomes zero
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ANSWER :
A. Increases