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Which one of the following statements is...

Which one of the following statements is true for the relation `F=(Gm_(1)m_(2))/(r^(2))`? (All symbols have their usual meanings)

A

The quantity G depends on the local value of g, acceleration due to gravity.

B

The quantity G is greatest at the surface of the Earth

C

The quantity G is used only when earth is one of the two masses

D

The quantity G is a universal constant

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The correct Answer is:
D
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