Test Details

Gravitation

Feb 11, 9:00 PM

41 minutes

Feb 11, 9:41 PM

30.0 marks

MCQ

30 questions

19891998

mentor of Maths and science with diverse perspective

Class Details

Physics

11th Physics Intro

Physics

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Question Text

Question 1 :
To have an earth synchronous satellites it should be launched at the proper height moving from

Question 2 :
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:

Question 3 :
If suddenly the gravitational force of attraction between the earth and a satellite revolving around it becomes zero, what will happen?

Question 4 :
A satellite is orbiting the earth at 17,500 MPH, a rock is released from the satellite. Identify what would happen to the rock.

Question 5 :
The time period of an earth satellite in circular orbit is independent of:

Question 7 :
An artificial satellite moving in a circular orbit around the earth has a total $(kinetic + potential)$ energy $E_{0}$, its potential energy is:

Question 8 :
LANDSAT series of satellites move in near polar orbits at an altitude of

Question 9 :
The minimum number of geostationary satellites required to televise a programme all over the earth is

Question 11 :
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 12 :
A missile is launched with a velocity less than the escape velocity.The sum of its kinetic and potential energy is :

Question 13 :
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 $ms^{-2})$

Question 14 :
When a satellite going round the earth in a circular orbit of radius $r$ and speed $v$, loses some of its potential energy, then :

Question 15 :
Which of the following is the cause of weightlessness experienced while orbiting around earth on a spaceship ?

Question 16 :
A satellite is revolving near the earth's surface. Its orbital velocity is

Question 17 :
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 19 :
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 III. Mass of the satellite

Question 21 :
While orbiting around the earth in a apaceship, an astronaut experiences

Question 22 :
A particle falls towards earth from infinity. The velocity with which it reaches earths surface is

Question 23 :
For a satellite escape velocity is 11 km/s. If the satellite is launched at an angle of $60^{0}$ with the vertical, then escape velocity would be

Question 24 :
A person sitting in a satellite orbiting earth feels weightlessness due to

Question 25 :
When a satellite falls to an orbit of smaller radius its kinetic energy :

Question 26 :
When the velocity of a satellite increases, its kinetic energy increases. The satellite nowt revolves in an orbit of

Question 27 :
Motion of artificial satellite around the earth is powered by :

Question 28 :
The time period of revolution of satellites is T. The kinetic energy of the satellite is proportional to

Question 29 :
State whether the given statement is True or False : It is possible to put an artificial satellite into orbit in such a way that it will always remain directly over New Delhi.

Question 30 :
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

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