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The value of 'g' at a depth of 80 km wil...

The value of 'g' at a depth of 80 km will be (`Radius of earth=6400 km` and value of 'g' on the surface of earth is `10 m/s^2`)

A

`990 (cm)/s^2`

B

`980 (cm)/s^2`

C

`970 (cm)/s^2`

D

`1000 (cm)/s^2`

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