Question

Which one of the following statements about a satellite orbiting around the Earth is correct?

• A. Satellite is kept in orbit by remote control from ground station.
• B. Satellite is kept in orbit by retro-rocket and solar energy keeps it moving around the Earth.
• C. Satellite requires energy from solar panels and solid fuels for orbiting.
• D. Satellite does not require any energy for orbiting.

Answer 1

The correct option is D Satellite does not require any energy for orbiting.

A satellite does not require any energy for orbiting in the absence of external factors like aerodynamic drag, magnetic gradient, etc. It only needs energy to reach to the orbit. Hence D is the correct answer.