Question 2 :
LANDSAT series of satellites move in near polar orbits at an altitude of
Question 3 :
Two satellites of masses 400 kg, 500 kg are revolving around earth in different circular orbits of radii $r_{1}$, $r_{2}$ such that their kinetic energies are equal. The ratio of $r_{1}$, $r_{2}$ is<br>
Question 4 :
If suddenly the gravitational force of attraction between the earth and a satellite revolving around it becomes zero, what will happen?
Question 5 :
The time period of revolution of satellites is T. The kinetic energy of the satellite is proportional to
Question 6 :
Assertion: Total energy is conserved in moving a satellite to higher orbit.
Reason: Sum of change in PE and KE is same in magnitude and opposite in nature
Question 7 :
A missile is launched with a velocity less than the escape velocity.The sum of its kinetic and potential energy is :
Question 8 :
An artificial satellite moving in a circular orbit around the earth has a total $(kinetic + potential)$ energy $E_{0}$, its potential energy is:
Question 9 :
While orbiting around the earth in a apaceship, an astronaut experiences
Question 10 :
An artificial satellite is revolving in a circular orbit at height of $1200 km$ above the surface of the earth. If the radius of the earth is $6400km$ and mass is $6\times 10^{24}$ kg the orbital velocity $\left ( G= 6.67\times 10^{-11} Nm^{2}/kg^{2} \right)$ is<br/>
Question 13 :
An earth's satellite is moving in a circular orbit with a uniform speed v. If the gravitational force of the earth suddenly disappears, the satellite will:-
Question 14 :
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 15 :
A satellite is in a circular orbit around the earth at an altitude $R$ above the earth's surface, where $R$ is the radius of the earth. If $g$ is the acceleration due to gravity on the surface of the earth, the speed of the satellite is:
Question 16 :
A pendulum beats seconds on the earth. Its time period on a stationary satellite of the earth will be
Question 17 :
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 18 :
The period of a satellite in a circular orbit around a planet is independent of :
Question 19 :
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 20 :
Time period of a satellite in an orbit of radius R is T. Its period of revolution in an orbit of radius 4R will be<br>
