Gravitation Test

Result

Gravitation Test - 26

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Weekly Quiz Competition

Question 1
4 / -1

The time period of a satellite of earth is 5 hr. If the separation between the earth and the satellite is increased to four times the previous value, the new time period will become

A
20 hr

B
10 hr

C
80 hr

D
40 hr

Solution
Question 2
4 / -1

To an astronaut in a spaceship, the sky appears

A
Black

B
White

C
Green

D
Blue
Question 3
4 / -1

A geostationary satellite is revolving around the earth. To make it escape from gravitational field of earth, is velocity must be increased

A
100%

B
41.4%

C
50%

D
59.6%

Solution
Question 4
4 / -1

Venus looks brighter than other planets because

A
It is heavier than other planets

B
It has higher density than other planets

C
It is closer to the earth than other planets

D
It has no atmosphere
Question 5
4 / -1

The orbital speed of Jupiter is

A
Greater than the orbital speed of earth

B
Less than the orbital speed of earth

C
Equal to the orbital speed of earth

D
Zero

Solution
Question 6
4 / -1

According to Kepler, the period of revolution of a planet (T) and its mean distance from the sun (r) are related by the equation

A
T³r³ = Constant

B
T²r^-3 = Constant

C
Tr³ = Constant

D
T²r = Constant

Solution
Question 7
4 / -1

A satellite A of mass m is at a distance of r from the centre of the earth. Another satellite B of mass 2m is at a distance of 2r from the earth\'s centre. Their time periods are in the ratio of

A
1 : 2

B
1 : 16

C
1 : 32

D
1 : 2√2

Solution
Question 8
4 / -1

The period of revolution of planet A around the sun is 8 times that of B. The distance of A from the sun is how many times greater than that of B from the sun?

A
2

B
3

C
4

D
5

Solution
Question 9
4 / -1

Planetary system in the solar system describes

A
Conservation of energy

B
Conservation of linear momentum

C
Conservation of angular momentum

D
None of the above
Question 10
4 / -1

If mass of a satellite is doubled and time period remain constant the ratio of orbit in the two cases will be

A
1 : 2

B
1 : 1

C
1 : 3

D
None of these