Earth Satellite MCQ

Test your knowledge with important Earth Satellite MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Earth Satellite MCQs at Bissoy

• The only natural satellite of India is the moon.
  ক

  True

  খ

  False
• The orbital velocity of a satellite orbiting the earth is half the escape velocity of the earth. What is the height above the surface of the earth at which it is orbiting? (Let the radius of the earth (R) = 6400 km).
  ক

  6400 km

  খ

  3200 km

  গ

  9600 km

  ঘ

  4800 km
• A satellite revolves around a planet of radius “Q”. If the angular velocity of the satellite is “w” and the radius of the orbit is “4nQ”, where “n” is an integer, what is the acceleration due to gravity on the surface of the planet?
  ক

  (w2 x (nQ) 3/Q2)

  খ

  16 (w2 x (nQ) 3/Q2)

  গ

  64(w2 x (nQ) 3/Q2)

  ঘ

  32(w2 x (nQ) 3/Q21)
• The radius of a planet is “R” and mass is “M”. A satellite revolves around it in an orbital radius of “r” and an orbital velocity “v”. How would you express the acceleration due to gravity on the surface of the planet?
  ক

  (r3*v/R)

  খ

  (r2*v3/R)

  গ

  (r3*v2/R)

  ঘ

  (r*v2/R2)
• If a satellite is orbiting as close to the earth’s surface as possible _____
  ক

  its speed is maximum

  খ

  its speed is minimum

  গ

  it’s kinetic energy will be minimum

  ঘ

  it is not possible to quantify its kinetic energy
• A satellite is seen after every 8 hours. If it rotates opposite to that of the earth, what is its angular velocity about the centre of the earth? Assume the earth is perfectly spherical and the satellite is in the equatorial plane.
  ক

  pi/2

  খ

  pi/4

  গ

  pi/6

  ঘ

  pi/8
• Two satellites of masses 50 kg and 100 kg revolve around the earth in circular orbits of radii 9R and 16R. What is the ratio of speeds of the two satellites?
  ক

  3:4

  খ

  4:3

  গ

  9:16

  ঘ

  16:9
• Consider two satellites A and B. Both move around the earth in the same orbit but the mass of B is twice that of the mass of A.
  ক

  Orbital speeds of A and B are equal

  খ

  The orbital speed of A is twice that of B

  গ

  The orbital speed of B is twice that of A

  ঘ

  The kinetic energy of both A and B are equal
• The time period of a satellite depends on _____
  ক

  the mass of the satellite

  খ

  radius of its orbit

  গ

  both mass of satellite and radius of the orbit

  ঘ

  neither mass of satellite nor radius of the orbit
• The time period of a satellite of earth is 90 minutes. If the separation between the earth and the satellite is quadrupled, the new time period will be _____________
  ক

  90 minutes

  খ

  180 minutes

  গ

  560 minutes

  ঘ

  720 minutes
• The time period of a satellite is independent of the mass of the satellite.
  ক

  True

  খ

  False
• A satellite orbits the earth at a height of R/5. What is its orbital speed? 1/2 b) 1/2 c) 1/2 d) 1/2
  ক

  1/2

  খ

  (2*G*M)/(R)

  গ

  (2*G*M)/(R)

  ঘ

  (2*G*M)/(R)
• A satellite is revolving very close to a planet of density D. What is the time period of that satellite? 1/2 b) 3/2 c) 1/2 d) 1/2
  ক

  1/2

  খ

  3/(D*G)

  গ

  3/(D*G)

  ঘ

  3/(D*G)
• A satellite is launched into a circular orbit of radius R while a second satellite is launched into an orbit of radius 1.02R. What is the percentage change in the time periods of the two satellites?
  ক

  0.7

  খ

  1

  গ

  1.5

  ঘ

  3
• Consider 2 satellites A and B having time periods 16 hours and 1 hour, respectively. What is the ratio of the radius of their orbits?
  ক

  4:1

  খ

  8:1

  গ

  16:1

  ঘ

  64:1
• The time period of the moon around the earth is 24 hours.
  ক

  True

  খ

  False
• The satellites orbiting the earth, eventually fall to the earth when they are left unsupervised or unattended because _____
  ক

  their power supply runs out

  খ

  of viscous forces causing the speed of the satellite and hence height to gradually decrease

  গ

  the laws of gravitation predict such a trajectory

  ঘ

  of collisions with other satellites