Welcome to your Gravitational - 2
1.
A planet moves fastest when it is
2.
Dimensions of gravitational constant G are
3.
In an elliptical orbit, the Sun is located at
4.
The direction of velocity at any point of orbit is along
5.
The closest point of planet from Sun is called
6.
Kepler’s laws are valid for
7.
Kepler’s second law is also known as
8.
Which of the following is NOT explained by Kepler’s laws?
9.
Areal velocity of planet in elliptical orbit is
10.
Semi-major axis of ellipse is
11.
A satellite moving under gravity sweeps equal areas in equal times about
12.
Which scientist explained Kepler’s laws theoretically?
13.
Kepler’s third law is valid for
14.
The farthest point of planet from Sun is
15.
Kepler’s third law states that T² is proportional to
16.
Who provided data for Kepler’s laws?
17.
If mass of Sun increases, time period of Earth will
18.
Kepler’s second law is equivalent to conservation of
19.
For a planet in elliptical orbit, maximum speed occurs at
20.
If radius of circular orbit of a planet is doubled, its time period becomes
21.
Gravitational force between two bodies is always
22.
According to Kepler’s second law, area swept in equal time intervals is
23.
Which law explains variation of speed of planet?
24.
In an elliptical orbit, sum of distances from foci is
25.
Newton’s law of gravitation states that force between two masses is proportional to
26.
Which quantity remains constant for a planet in circular orbit?
27.
Elliptical orbit becomes circular when
28.
A planet farther from Sun has
29.
Circular orbit is a special case of
30.
If semi-major axis of planet A is 4 times that of planet B, ratio of their periods is
31.
A planet moves slowest when it is
32.
Gravitational force between two masses varies inversely as
33.
If a planet suddenly stops obeying Kepler’s second law, which quantity is not conserved?
34.
Kepler’s laws were derived from
36.
A comet moving in highly elliptical orbit has very high speed at
37.
Kepler’s second law is a consequence of conservation of
38.
Newton used Kepler’s laws to establish
39.
If gravitational force suddenly disappears, planet will move in
40.
Kepler’s third law relates
41.
SI unit of gravitational constant G is
42.
Two planets revolve around Sun in circular orbits of radii r and 4r. Ratio of angular speeds is
43.
For planets revolving around Sun, central force is
44.
For elliptical orbit, total energy of planet is
45.
Kepler’s first law states that planets move in
