Engineering Entrance Sample Papers Satellite Motion Physics Problems

 Question 1
Which is constant for a satellite in orbit?
 A Acceleration B Angular momentum C Velocity D Potential energy
 Question 2
The time period of a satellite of earth is 5 hours. If the separation between the earth and the satellite is increased to four times the previous value, the new time period will become
 A 80 hours B 10 hours C 40 hours D 20 hours
 Question 3
The relay satellite transmits the T.V. programme continuously from one part of the world to another because its
 A Period has no relation with the period of the earth about its axis B Period is less than the period of rotation of the earth about its axis C Period is greater than the period of rotation of the earth D Period is equal to the period of rotation of the earth about its axis
 Question 4
If Gravitational constant is decreasing in time, what will remain unchanged in case of a satellite orbiting around earth
 A Orbiting radius B Angular velocity C Tangential velocity D Time period
 Question 5
The ratio of the K.E. required to be given to the satellite to escape earth's gravitational field to the K.E. required to be given so that the satellite moves in a circular orbit  just  above earth atmosphere is
 A One B Two C Infinity D Half
 Question 6
Which one of the following statements regarding artificial satellite of the earth is incorrect
 A The period of revolution is large if the radius of its orbit is large B A minimum velocity of 8 km/sec is required by a satellite to orbit quite close to the earth C The height of a geostationary satellite is about 36000 km from earth D The orbital velocity depends on the mass of the satellite
 Question 7
Consider a satellite going round the earth in an orbit. Which of the following statements is wrong
 A It is a freely falling body B It suffers no acceleration C Its angular momentum remains constant D It is moving with a constant speed
 Question 8
Out of the following, the only incorrect statement about satellites is
 A The speed of a satellite increases with an increase in the radius of its orbit B We can use just one geostationary satellite for global communication around the globe C Geostationary satellites are launched in the equatorial plane D A satellite cannot move in a stable orbit in a plane passing through the earth's centre
 Question 9
Choose the correct statement from the following : The radius of the orbit of a geostationary satellite depends upon
 A Mass of the satellite, its time period and the gravitational constant B Mass of the earth, mass of the satellite, time period of the satellite and the gravitational constant C Mass of the satellite, mass of the earth and the gravitational constant D Mass of the earth, time period of the satellite and the gravitational constant
 Question 10
A ball is dropped from a spacecraft revolving around the earth at a height of 120 km. What will happen to the ball
 A It will go very far in the space B It will continue to move with velocity v along the original orbit of spacecraft C It will fall down to the earth gradually D It will move with the same speed tangentially to the spacecraft
 Question 11
A geostationary satellite

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 A Has a time period less than that of the near earth satellite B Moves faster than a near earth satellite C Is stationary in the space D Revolves about the polar axis
 Question 12
Select the correct statement from the following
 A The orbital velocity of a satellite increases with the radius of the orbit B The orbital velocity is inversely proportional to the square root of the radius of the orbit C Escape velocity of a particle from the surface of the earth depends on the speed with which it is fired D The time period of a satellite does not depend on the radius of the orbit
 Question 13
A person sitting in a chair in a satellite feels weightless because
 A The normal force is zero B The person in satellite is not accelerated C The earth does not attract the objects in a satellite D The normal force by the chair on the person balances the earth's attraction
 Question 14
Which of the following statements is correct in respect of a geostationary satellite?
 A Its height above the earth’s surface is about the same as the radius of the earth B Its height above the earth’s surface is about six times the radius of the earth C It moves in a plane containing the Greenwich meridian D It moves in a plane perpendicular to the celestial equatorial plane
 Question 15
The periodic time of a communication satellite is

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 A 18 hours B 6 hours C 12 hours D 24 hours
 Question 16
A satellite revolves around the earth in an elliptical orbit. Its speed
 A Is the same at all points in the orbit B Is greatest when it is farthest from the earth C Is greatest when it is closest to the earth D Goes on increasing or decreasing continuously depending upon the mass of the satellite
 Question 17
To an astronaut in a spaceship, the sky appears
 A Black B White C Blue D Green
 Question 18
The weight of an astronaut, in an artificial satellite revolving around the earth, is
 A Less than that on the earth B Zero C More than that on the earth D Equal to that on the earth
 Question 19
Where can a geostationary satellite be installed?
 A At height R above earth B Over any city on the equator C At the surface of earth D Over the north or south pole
 Question 20
If a satellite is orbiting the earth very close to its surface, then the orbital velocity mainly depends on
 A The mass of the satellite only B The mass of the earth only C The radius of the earth only D The orbital radius only
There are 20 questions to complete.