Which one of the following statements is correct? - Vidyadip

MCQ

Which one of the following statements is correct?

A
The energy required to rocket an orbiting satellite out of earth's gravitational influence is more than the energy required to project a stationary object at the same height $($as the satellite$)$ out of earth's influence.
B
If the zero of potential energy is at infinity, the total energy of an orbiting satellite is negative of potential energy.
C
The first artificial satellite sputnik I was launched in the year $2001.$
✓
The time period of rotation of the $\text{SYNCOMS.} ($Synchronous communications satellite$)$ is $24$ hours.

✓

Answer

Correct option: D.

The time period of rotation of the $\text{SYNCOMS.} ($Synchronous communications satellite$)$ is $24$ hours.

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