Gravitation Test

Result

Gravitation Test - 41

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Weekly Quiz Competition

Question 1
4 / -1

A satellite of mass m is orbiting close to the surface of the earth (Radius R = 6400 km) has a K.E. K. The corresponding K.E. of satellite to escape from the earth’s gravitational field is

A
k

B
2 k

C
mg R

D
m k

Solution
Question 2
4 / -1

A

B

C

D

Solution
Question 3
4 / -1

The time period T of the moon of planet Mars(Mm) is related to its orbital radius R as (G = Gravitational constant)

A

B

C

D

Solution
Question 4
4 / -1

A geostationary satellite is orbiting the earth at a height of 5 R above that of surface of the earth. R being the radius of the earth. The time period of another satellite in hours at a height of 2R from the surface of earth is ............ hr

A
5

B
10

C

D

Solution
Question 5
4 / -1

The figure shows elliptical orbit of a planet m about the sun s. the shaded area SCD is twice the shaded area SAB. If t₁ is the time for the planet to move from C and D and t₂ is the time to move from A to B then

A

B

C

D

Solution
Question 6
4 / -1

The period of a satellite in a circular orbit of radius R is T. the period of another satellite in a circular orbit of radius 4R is

A
4T

B
T/4

C
8T

D
T/8

Solution
Question 7
4 / -1

If the earth is at one- fourth of its present distance from the sun the duration of year will be

A
Half the pesent Year

B
One-eight the present year

C
One-fourth the present year

D
One-sixth the present year

Solution
Question 8
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 9
4 / -1

Kepler’s second law regarding constancy of aerial velocity of a planet is consequence of the law of conservation of

A
Energy

B
Angular Momentum

C
Linear momentum

D
None of these

Solution
Question 10
4 / -1

The largest and shortest distance of the earth from the sun are r₁ and r₂ its distance from the sun when it is at the perpendicular to the major axis of the orbit drawn from the sun

A

B

C

D

Solution