Tag: space missions

Quizzes (10) Questions (5)

Questions Related to space missions

Multiple choice evs space missions space research and satellites artificial satellites space missions and artificial satellites launching of an artificial satellites around the earth launching of satellite india’s space programmes

Transponder is a device in satellites to: 

  1. correct the orbit of satellite

  2. photograph features of the Earth

  3. receive and broadcast audio and video signals

  4. spy on criminals
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

To receive and broadcast audio and video signals
Transponders basically receive and transfer signals in satellite communication. Hence, it can be used to broadcast received audio and video signals.

Multiple choice evs space missions space research and satellites artificial satellites space missions and artificial satellites launching of an artificial satellites around the earth launching of satellite india’s space programmes
The process of acquiring information about an object or phenomenon without making actual physical contact within, as opposed to onsite observation is called :

  1. Remote Sensing

  2. Actuation

  3. Transducing

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Remote Sensing is the process of acquiring Information about an object or phenomenon without making actual physical contact within, as opposed to onsite observation.

This often requires the use of aerial sensor technologies.

Multiple choice evs space missions space research and satellites artificial satellites space missions and artificial satellites launching of an artificial satellites around the earth launching of satellite india’s space programmes

A celestial body that revolves around a planet is known as _____. 

  1. $Constellation$
  2. $Satellites$
  3. $Sun$

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A celestial body that revolves around a planet is defined as a satellite (natural or artificial).

Multiple choice physics space missions launching of an artificial satellites around the earth launching of satellite india’s space programmes

ENERGY OF AN ORBITING SATELLITE
In motion of an object under the gravitational influence of another object. Which of the following quantities is not conserved?

  1. Angular momentum

  2. mass of an object

  3. Total mechanical energy

  4. Linear momentum
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

While considering the motion of an object under the gravitational influence of another object, angular momentum and total mechanical energy are conserved.Linear momentum is not conserved

Multiple choice physics space missions launching of an artificial satellites around the earth launching of satellite india’s space programmes

The minimum distance of a satellite from the centre of the earth is 3R, where R is the radius of 2GM What is the earth. The mass of earth is M. The maximum speed of the satellite is $\sqrt { \frac { 2 G M } { 3 R } }$ radius of curvature at the point of minimum distance?

  1. 6 R

  2. 4 R

  3. 3 R
  4. $\frac { 9 R } { 2 }$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

$\begin{array}{l} F=\dfrac { { G\left( M \right) m } }{ { { { \left( { 3R } \right)  }^{ 2 } } } }  \ \Rightarrow a=\dfrac { { GM } }{ { 9{ R^{ 2 } } } }  \ \therefore \dfrac { { { V^{ 2 } } } }{ { R' } } =a \ \Rightarrow \dfrac { { 2GM } }{ { 3R.R' } } =\dfrac { { GM } }{ { 9{ R^{ 2 } } } }  \ \Rightarrow R'=6R \ Hence, \ option\, \, A\, \, is\, \, correct\, \, answer. \end{array}$