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If density of the earth is doubled keepi...

If density of the earth is doubled keeping radius constant, the new acceleration due to gravity is (g = `9.8 m//s^2` )

A

`9.8 m/s^2`

B

`19.6 m/s^2`

C

`4.9 m/s^2`

D

`39.2 m/s^2`

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