Question 1 :
Two satellites A and B move round the earth in the same orbit. The mass of B is twice the mass of A.Which of the following is correct?
Question 2 :
A particle falls towards earth from infinity. The velocity with which it reaches earths surface is<br/>
Question 4 :
The period of a satellite in a circular orbit around a planet is independent of :
Question 6 :
If suddenly the gravitational force of attraction between the earth and a satellite revolving around it becomes zero, what will happen?
Question 8 :
The orbital angular velocity vector of a geostationary satellite and the spin angular velocity vector of the earth are<br>
Question 9 :
When a satellite falls to an orbit of smaller radius its kinetic energy :
Question 10 :
A satellite is orbiting around the earth. The centripetal acceleration of the satellite is given by:I. Distance from the center of the Earth II. Mass of the Earth <br/>III. Mass of the satellite <br/>
Question 11 :
When a satellite going round the earth in a circular orbit of radius $r$ and speed $v$, loses some of its potential energy, then :<br/>
Question 12 :
Assume that a satellite is revolving around Earth in a circular orbit almost close to the surface of Earth. The time period of revolution of satellite is $( $Radius of earth is 6400 km, $g =$ 9.8 $ms^{-2})$<br>
Question 13 :
When a satellite going round the earth in a circular orbit of radius $r$ and speed $v$ loses some of its energy, then $r$ and $v$ change as<br>
Question 14 :
A missile is launched with a velocity less than the escape velocity.The sum of its kinetic and potential energy is :
Question 15 :
While orbiting around the earth in a apaceship, an astronaut experiences
Question 16 :
The time period of satellite of earth is $5$ hr. If the separation between earth and the satellite is increased to $4$ times the previous value, the new time period will become:<br/>
Question 17 :
Which of the following is the cause of weightlessness experienced while orbiting around earth on a spaceship ?
Question 18 :
State whether the given statement is True or False :<br/>It is possible to put an artificial satellite into orbit in such a way that it will always remain directly over New Delhi.
Question 20 :
A pendulum beats seconds on the earth. Its time period on a stationary satellite of the earth will be