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Question

At perihelion, the gravitational potential energy of Pluto in its orbit has
  1. its maximum value
  2. its mimimum value
  3. value which depends on sense of rotation
  4. the same value as at every other point in the orbit

A
its maximum value
B
the same value as at every other point in the orbit
C
its mimimum value
D
value which depends on sense of rotation
Solution
Verified by Toppr

The gravitational potential energy is given by P=GMmr.
We can observe that its a negative value and r is minimum at perihelion.
Thus GMmr is highest and potential energy GMmr is minimum.

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