MCQ
If the gravitational potential energy of two point masses infinitely away is taken to be zero then gravitational potential energy of a galaxy is ...............
- AZero
- BPositive
- ✓Negative
- DCan have any value
✓
Answer
Correct option: C.
Negative
c
(c)
(c)
A galaxy is a bounded system, for a bounded system or closed system like planet-sun, satellite Earth, electronnucleus etc. total energy and the potential energy both are negative.
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