railway RRB Technician Grade 3 Mock Test 2024 General Science Physics

If g on the surface of the earth is \(10m/s^2\), its value at a height of 6400 km is (Radius of the earth = 6400 km)

1
\(5 \ ms^{-2}\)
2
\(20 \ ms^{-2}\)
3
\(2.5 \ ms^{-2}\)
4
\(10 \ ms^{-2}\)
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