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At what height from the surface of earth...

At what height from the surface of earth the gravitation potential and the value of `g` are `- 5.4 xx 10^(7) J kg^(-2)` and `6.0 ms^(-2)` respectively ? Take the radius of earth as `6400 km`:

A

`1600 km`

B

`1400 km`

C

`2000 km`

D

`2600 km`

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The correct Answer is:
D
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