Question

Multistage rocket is used because:

• A. a single rocket cannot push satellite to a great height
• B. a single rocket cannot carry huge amount of fuel
• C. the speed of a single rocket is less
• D. none of the above

Answer 1

The correct option is A a single rocket cannot push satellite to a great height

A multi-stage rocket consists of several pieces of fuel containers joined in series. Whenever any container's fuel starts burning, obviously the fuel quantity starts decreasing. When the container is completely empty, it is detached from the rocket and the second container starts working. This reduces the mass and weight of the rocket, enabling it to travel faster than before. After the 2nd gets empty, that is also detached and the third starts working, and so on. Thus there is rapid gain in speed continuously.

In a single stage rocket, there is only one large container which contains all the fuel. It cannot be detached from the rocket. Its speed doesn't increase as rapidly as a multi-stage one.

A multi-stage rocket can launch a satellite to a much greater height as compared to a single-stage one.