Welcome to your Gravitational - 2
1.
Kepler’s first law states that planets move in
2.
Two planets revolve around Sun in circular orbits of radii r and 4r. Ratio of angular speeds is
3.
If semi-major axis of planet A is 4 times that of planet B, ratio of their periods is
4.
A planet moves slowest when it is
5.
For planets revolving around Sun, central force is
7.
The farthest point of planet from Sun is
8.
Newton used Kepler’s laws to establish
9.
In an elliptical orbit, sum of distances from foci is
10.
A planet farther from Sun has
11.
A satellite moving under gravity sweeps equal areas in equal times about
12.
Areal velocity of planet in elliptical orbit is
13.
If gravitational force suddenly disappears, planet will move in
14.
Circular orbit is a special case of
15.
Kepler’s third law is valid for
16.
Kepler’s third law states that T² is proportional to
17.
Dimensions of gravitational constant G are
18.
Which of the following is NOT explained by Kepler’s laws?
19.
According to Kepler’s second law, area swept in equal time intervals is
20.
Which scientist explained Kepler’s laws theoretically?
21.
If radius of circular orbit of a planet is doubled, its time period becomes
22.
Which quantity remains constant for a planet in circular orbit?
23.
Which law explains variation of speed of planet?
24.
The closest point of planet from Sun is called
25.
For a planet in elliptical orbit, maximum speed occurs at
26.
The direction of velocity at any point of orbit is along
27.
Gravitational force between two masses varies inversely as
28.
For elliptical orbit, total energy of planet is
29.
Kepler’s second law is a consequence of conservation of
30.
Kepler’s laws are valid for
31.
Kepler’s second law is equivalent to conservation of
32.
A planet moves fastest when it is
33.
SI unit of gravitational constant G is
34.
Kepler’s laws were derived from
35.
Gravitational force between two bodies is always
36.
A comet moving in highly elliptical orbit has very high speed at
37.
Elliptical orbit becomes circular when
38.
Kepler’s third law relates
39.
Who provided data for Kepler’s laws?
40.
In an elliptical orbit, the Sun is located at
41.
Semi-major axis of ellipse is
42.
Newton’s law of gravitation states that force between two masses is proportional to
43.
If mass of Sun increases, time period of Earth will
44.
If a planet suddenly stops obeying Kepler’s second law, which quantity is not conserved?
45.
Kepler’s second law is also known as
