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Question

If R is the radius of the earth and g the acceleration due to gravity on the earth's surface, the mean density of the earth is

Options :

  1. 4πG / 3gR

  2. 3πR / 4gG

  3. 3g / 4πRG

  4. πRg / 12G

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Answer :

3g / 4πRG

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