Kepler’s Law of Planetary Motion NEET Questions

Physics - Gravitation

Kepler’s Law of Planetary Motion MCQ Questions


1.
Kepler's laws of planetary motion were derived from the extensive naked-eye observational data collected by:
A.
Isaac Newton
B.
Galileo Galilei
C.
Tycho Brahe (compiled by Johannes Kepler)
D.
Nicolaus Copernicus
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ANSWER :
C. Tycho Brahe (compiled by Johannes Kepler)
2.
The heliocentric model in which planets revolve around the Sun was first proposed in a definitive form by:
A.
Ptolemy
B.
Tycho Brahe
C.
Nicolas Copernicus (1473–1543)
D.
Johannes Kepler
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ANSWER :
C. Nicolas Copernicus (1473–1543)
3.
Kepler's First Law (Law of Orbits) states that:
A.
All planets move in circular orbits with the Sun at the centre
B.
All planets move in elliptical orbits with the Sun at one of the foci
C.
All planets move in parabolic orbits with the Sun at the focus
D.
All planets move in elliptical orbits with the Sun at the centre
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ANSWER :
B. All planets move in elliptical orbits with the Sun at one of the foci
4.
For any point T on an ellipse with foci F₁ and F₂, which mathematical property defines the ellipse?
A.
F₁T - F₂T = constant
B.
F₁T × F₂T = constant
C.
F₁T + F₂T = constant (= 2a, the major axis)
D.
F₁T / F₂T = constant
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ANSWER :
C. F₁T + F₂T = constant (= 2a, the major axis)
5.
In an elliptical orbit, the CLOSEST point of a planet to the Sun is called:
A.
Aphelion
B.
Perihelion
C.
Semi-major axis
D.
Focus
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ANSWER :
B. Perihelion
6.
The semi-major axis of an elliptical orbit is defined as:
A.
The distance from one focus to the centre of the ellipse
B.
Half the length of the longer axis (PA/2, where P is perihelion and A is aphelion)
C.
The perpendicular distance from the centre to the ellipse
D.
The distance between the two foci
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ANSWER :
B. Half the length of the longer axis (PA/2, where P is perihelion and A is aphelion)