The average radii of orbits of mercury a...

The average radii of orbits of mercury and earth around the sun are `6xx10^(7)` km and `1.5xx10^(8)` km respectively. The ratio of their orbital speeds will be :-

`sqrt(5) : sqrt(2)`

`sqrt(2) : sqrt(5)`

`2.5 :1`

`1 : 25`

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

GRAVITATION
ALLEN |Exercise EXERCISE 2|26 Videos
GRAVITATION
ALLEN |Exercise EXERCISE 3|11 Videos
GRAVITATION
ALLEN |Exercise BOX-4|14 Videos
GEOMETRICAL OPTICS
ALLEN |Exercise subjective|14 Videos
KINEMATICS-2D
ALLEN |Exercise Exercise (O-2)|47 Videos

Similar Questions

Explore conceptually related problems

Two metal spheres are falling through a liquid of density 2xx10^(3)kg//m^(3) with the same uniform speed. The material density of sphere 1 and sphere 2 are 8xx10^(3)kg//m^(3) and 11xx10^(3)kg//m^(3) respectively. The ratio of their radii is :-

Maximum wavelength of radiations from Sun and Moon are 25Å and 0.5xx10^(-6) m respectively ratio of their temperature is . . . .. .

At what height from the surface of earth the gravitation potential and the value of g are - 5.4 xx 10^(7) J kg^(-2) and 6.0 ms^(-2) respectively ? Take the radius of earth as 6400 km :

At what height from the surface of earth the gravitation potential and the value of g are - 5.4 xx 10^(+7) JKg^(-2) and 6.0 ms^(-2) respectively ? Take the radius of earth as 6400 km.

The radiation emitted by a star A is 10,000 times that of the Sun. If the surface temperature of the Sun and the star are 6000 K and 2000 K respectively, the ratio of the radius of star A and the Sun is . . . .. . . .

The radii of circular orbits of two satellite A and B of the earth are 4R and R , respectively. If the speed of satellite A is 3v , then the speed of satellite B will be

The mean radius of the earth's orbit round the sun is 1.5xx10^(11) . The mean radius of the orbit of mercury round the sun is 6xx10^(10)m . The mercury will rotate around the sun in

In adjoining figure earth goes around the sun in eliptical orbit on which point the orbital speed is maximum :

The radius of the innermost electron orbit of a hydrogen atom is 5.3 xx 10^(–11) m . What are the radii of the n = 2 and n =3 orbits?

ALLEN -GRAVITATION-EXERCISE 1

Binding energy of moon and earth is :-
Text Solution
|
Two artificial satellites A and B are at a distance r(A) and r(B) abov...
Text Solution
|
The average radii of orbits of mercury and earth around the sun are 6x...
Text Solution
|
A body is dropped by a satellite in its geo-stationary orbit :
Text Solution
|
Two ordinary satellites are revolving round the earth in same elliptic...
Text Solution
|
Kepler's second law is a consequence of
Text Solution
|
One projectile after deviating from its path starts moving round the e...
Text Solution
|
In adjoining figure earth goes around the sun in eliptical orbit on wh...
Text Solution
|
Potential energy and kinetic energy of a two particle system under Ima...
Text Solution
|
A satellite of earth of mass 'm' is taken from orbital radius 2R to 3R...
Text Solution
|
If a graph is plotted between T^(2) and r^(3) for a planet, then its s...
Text Solution
|
A planet is revolving around the sun. its distance from the sun at apo...
Text Solution
|
A satellite launching statian should be
Text Solution
|
A satellite is launched into a circular orbit close to the earth's sur...
Text Solution
|
A satellite moves around the earth in a circular orbit with speed v. I...
Text Solution
|
If the length of the day is T, the height of that TV satellite above t...
Text Solution
|
If two bodies of mass M and m are revolving around the centre of mass ...
Text Solution
|
Two satellites of same mass m are revolving round of earth (mass M) in...
Text Solution
|
A planet of mass m is moving in an elliptical orbit about the sun (mas...
Text Solution
|
A relay satellite transmits the television programme from one part of ...
Text Solution
|