Note:

If your answer is options 2,4 Then you have to fill the OMR sheet as ‘24’
If your answer is options 1,3,4 Then you have to fill the OMR sheet as ‘134’
 

 

An astronaut leaves his spaceship for some experiment and floats freely in space at rest relative to his spaceship. His friend in the spaceship ignites a rocket installed on the spaceship for a very short duration. Which of the following observations can you make relative to a reference frame moving together with the astronaut outside the spaceship?
1) The spaceship has lesser kinetic energy than ejected gases
2) The spaceship and the ejected gases have equal kinetic energies
3) The spaceship has greater kinetic energy than the ejected gases
4) Magnitudes of momenta of spaceship and ejected gases are equal